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+## Generated by install_server.sh ##
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+# Redis configuration file example.
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+#
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+# Note that in order to read the configuration file, Redis must be
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+# started with the file path as first argument:
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+#
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+# ./redis-server /path/to/redis.conf
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+
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+# Note on units: when memory size is needed, it is possible to specify
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+# it in the usual form of 1k 5GB 4M and so forth:
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+#
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+# 1k => 1000 bytes
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+# 1kb => 1024 bytes
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+# 1m => 1000000 bytes
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+# 1mb => 1024*1024 bytes
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+# 1g => 1000000000 bytes
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+# 1gb => 1024*1024*1024 bytes
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+#
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+# units are case insensitive so 1GB 1Gb 1gB are all the same.
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+
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+################################## INCLUDES ###################################
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+
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+# Include one or more other config files here. This is useful if you
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+# have a standard template that goes to all Redis servers but also need
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+# to customize a few per-server settings. Include files can include
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+# other files, so use this wisely.
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+#
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+# Notice option "include" won't be rewritten by command "CONFIG REWRITE"
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+# from admin or Redis Sentinel. Since Redis always uses the last processed
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+# line as value of a configuration directive, you'd better put includes
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+# at the beginning of this file to avoid overwriting config change at runtime.
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+#
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+# If instead you are interested in using includes to override configuration
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+# options, it is better to use include as the last line.
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+#
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+# include /path/to/local.conf
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+# include /path/to/other.conf
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+
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+################################ GENERAL #####################################
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+
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+# By default Redis does not run as a daemon. Use 'yes' if you need it.
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+# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
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+daemonize yes
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+
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+# When running daemonized, Redis writes a pid file in /var/run/redis.pid by
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+# default. You can specify a custom pid file location here.
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+pidfile /var/run/redis.pid
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+
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+# Accept connections on the specified port, default is 6379.
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+# If port 0 is specified Redis will not listen on a TCP socket.
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+port 6380
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+
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+# TCP listen() backlog.
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+#
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+# In high requests-per-second environments you need an high backlog in order
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+# to avoid slow clients connections issues. Note that the Linux kernel
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+# will silently truncate it to the value of /proc/sys/net/core/somaxconn so
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+# make sure to raise both the value of somaxconn and tcp_max_syn_backlog
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+# in order to get the desired effect.
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+tcp-backlog 511
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+
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+# By default Redis listens for connections from all the network interfaces
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+# available on the server. It is possible to listen to just one or multiple
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+# interfaces using the "bind" configuration directive, followed by one or
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+# more IP addresses.
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+#
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+# Examples:
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+#
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+# bind 192.168.1.100 10.0.0.1
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+bind 0.0.0.0
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+
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+# Specify the path for the Unix socket that will be used to listen for
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+# incoming connections. There is no default, so Redis will not listen
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+# on a unix socket when not specified.
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+#
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+# unixsocket /tmp/redis.sock
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+# unixsocketperm 700
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+
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+# Close the connection after a client is idle for N seconds (0 to disable)
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+timeout 0
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+
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+# TCP keepalive.
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+#
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+# If non-zero, use SO_KEEPALIVE to send TCP ACKs to clients in absence
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+# of communication. This is useful for two reasons:
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+#
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+# 1) Detect dead peers.
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+# 2) Take the connection alive from the point of view of network
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+# equipment in the middle.
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+#
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+# On Linux, the specified value (in seconds) is the period used to send ACKs.
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+# Note that to close the connection the double of the time is needed.
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+# On other kernels the period depends on the kernel configuration.
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+#
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+# A reasonable value for this option is 60 seconds.
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+tcp-keepalive 0
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+
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+# Specify the server verbosity level.
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+# This can be one of:
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+# debug (a lot of information, useful for development/testing)
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+# verbose (many rarely useful info, but not a mess like the debug level)
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+# notice (moderately verbose, what you want in production probably)
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+# warning (only very important / critical messages are logged)
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+loglevel notice
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+
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+# Specify the log file name. Also the empty string can be used to force
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+# Redis to log on the standard output. Note that if you use standard
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+# output for logging but daemonize, logs will be sent to /dev/null
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+logfile /var/redis/redis-6380.log
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+
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+# To enable logging to the system logger, just set 'syslog-enabled' to yes,
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+# and optionally update the other syslog parameters to suit your needs.
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+# syslog-enabled no
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+
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+# Specify the syslog identity.
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+# syslog-ident redis
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+
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+# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7.
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+# syslog-facility local0
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+
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+# Set the number of databases. The default database is DB 0, you can select
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+# a different one on a per-connection basis using SELECT <dbid> where
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+# dbid is a number between 0 and 'databases'-1
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+databases 16
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+
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+################################ SNAPSHOTTING ################################
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+#
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+# Save the DB on disk:
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+#
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+# save <seconds> <changes>
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+#
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+# Will save the DB if both the given number of seconds and the given
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+# number of write operations against the DB occurred.
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+#
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+# In the example below the behaviour will be to save:
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+# after 900 sec (15 min) if at least 1 key changed
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+# after 300 sec (5 min) if at least 10 keys changed
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+# after 60 sec if at least 10000 keys changed
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+#
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+# Note: you can disable saving completely by commenting out all "save" lines.
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+#
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+# It is also possible to remove all the previously configured save
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+# points by adding a save directive with a single empty string argument
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+# like in the following example:
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+#
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+# save ""
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+
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+save 900 1
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+save 300 10
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+save 60 10000
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+
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+# By default Redis will stop accepting writes if RDB snapshots are enabled
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+# (at least one save point) and the latest background save failed.
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+# This will make the user aware (in a hard way) that data is not persisting
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+# on disk properly, otherwise chances are that no one will notice and some
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+# disaster will happen.
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+#
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+# If the background saving process will start working again Redis will
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+# automatically allow writes again.
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+#
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+# However if you have setup your proper monitoring of the Redis server
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+# and persistence, you may want to disable this feature so that Redis will
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+# continue to work as usual even if there are problems with disk,
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+# permissions, and so forth.
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+stop-writes-on-bgsave-error yes
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+
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+# Compress string objects using LZF when dump .rdb databases?
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+# For default that's set to 'yes' as it's almost always a win.
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+# If you want to save some CPU in the saving child set it to 'no' but
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+# the dataset will likely be bigger if you have compressible values or keys.
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+rdbcompression yes
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+
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+# Since version 5 of RDB a CRC64 checksum is placed at the end of the file.
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+# This makes the format more resistant to corruption but there is a performance
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+# hit to pay (around 10%) when saving and loading RDB files, so you can disable it
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+# for maximum performances.
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+#
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+# RDB files created with checksum disabled have a checksum of zero that will
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+# tell the loading code to skip the check.
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+rdbchecksum yes
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+
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+# The filename where to dump the DB
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+dbfilename dump.rdb
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+
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+# The working directory.
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+#
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+# The DB will be written inside this directory, with the filename specified
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+# above using the 'dbfilename' configuration directive.
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+#
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+# The Append Only File will also be created inside this directory.
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+#
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+# Note that you must specify a directory here, not a file name.
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+dir /var/redis
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+
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+################################# REPLICATION #################################
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+
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+# Master-Slave replication. Use slaveof to make a Redis instance a copy of
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+# another Redis server. A few things to understand ASAP about Redis replication.
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+#
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+# 1) Redis replication is asynchronous, but you can configure a master to
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+# stop accepting writes if it appears to be not connected with at least
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+# a given number of slaves.
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+# 2) Redis slaves are able to perform a partial resynchronization with the
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+# master if the replication link is lost for a relatively small amount of
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+# time. You may want to configure the replication backlog size (see the next
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+# sections of this file) with a sensible value depending on your needs.
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+# 3) Replication is automatic and does not need user intervention. After a
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+# network partition slaves automatically try to reconnect to masters
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+# and resynchronize with them.
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+#
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+# slaveof <masterip> <masterport>
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+
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+# If the master is password protected (using the "requirepass" configuration
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+# directive below) it is possible to tell the slave to authenticate before
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+# starting the replication synchronization process, otherwise the master will
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+# refuse the slave request.
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+#
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+# masterauth <master-password>
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+
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+# When a slave loses its connection with the master, or when the replication
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+# is still in progress, the slave can act in two different ways:
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+#
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+# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will
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+# still reply to client requests, possibly with out of date data, or the
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+# data set may just be empty if this is the first synchronization.
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+#
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+# 2) if slave-serve-stale-data is set to 'no' the slave will reply with
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+# an error "SYNC with master in progress" to all the kind of commands
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+# but to INFO and SLAVEOF.
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+#
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+slave-serve-stale-data yes
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+
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+# You can configure a slave instance to accept writes or not. Writing against
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+# a slave instance may be useful to store some ephemeral data (because data
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+# written on a slave will be easily deleted after resync with the master) but
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+# may also cause problems if clients are writing to it because of a
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+# misconfiguration.
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+#
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+# Since Redis 2.6 by default slaves are read-only.
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+#
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+# Note: read only slaves are not designed to be exposed to untrusted clients
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+# on the internet. It's just a protection layer against misuse of the instance.
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+# Still a read only slave exports by default all the administrative commands
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+# such as CONFIG, DEBUG, and so forth. To a limited extent you can improve
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+# security of read only slaves using 'rename-command' to shadow all the
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+# administrative / dangerous commands.
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+slave-read-only yes
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+
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+# Replication SYNC strategy: disk or socket.
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+#
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+# -------------------------------------------------------
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+# WARNING: DISKLESS REPLICATION IS EXPERIMENTAL CURRENTLY
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+# -------------------------------------------------------
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+#
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+# New slaves and reconnecting slaves that are not able to continue the replication
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+# process just receiving differences, need to do what is called a "full
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+# synchronization". An RDB file is transmitted from the master to the slaves.
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+# The transmission can happen in two different ways:
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+#
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+# 1) Disk-backed: The Redis master creates a new process that writes the RDB
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+# file on disk. Later the file is transferred by the parent
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+# process to the slaves incrementally.
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+# 2) Diskless: The Redis master creates a new process that directly writes the
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+# RDB file to slave sockets, without touching the disk at all.
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+#
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+# With disk-backed replication, while the RDB file is generated, more slaves
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+# can be queued and served with the RDB file as soon as the current child producing
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+# the RDB file finishes its work. With diskless replication instead once
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+# the transfer starts, new slaves arriving will be queued and a new transfer
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+# will start when the current one terminates.
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+#
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+# When diskless replication is used, the master waits a configurable amount of
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+# time (in seconds) before starting the transfer in the hope that multiple slaves
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+# will arrive and the transfer can be parallelized.
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+#
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+# With slow disks and fast (large bandwidth) networks, diskless replication
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+# works better.
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+repl-diskless-sync no
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+
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+# When diskless replication is enabled, it is possible to configure the delay
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+# the server waits in order to spawn the child that transfers the RDB via socket
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+# to the slaves.
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+#
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+# This is important since once the transfer starts, it is not possible to serve
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+# new slaves arriving, that will be queued for the next RDB transfer, so the server
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+# waits a delay in order to let more slaves arrive.
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+#
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+# The delay is specified in seconds, and by default is 5 seconds. To disable
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+# it entirely just set it to 0 seconds and the transfer will start ASAP.
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+repl-diskless-sync-delay 5
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+
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+# Slaves send PINGs to server in a predefined interval. It's possible to change
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+# this interval with the repl_ping_slave_period option. The default value is 10
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+# seconds.
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+#
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+# repl-ping-slave-period 10
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+
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+# The following option sets the replication timeout for:
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+#
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+# 1) Bulk transfer I/O during SYNC, from the point of view of slave.
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+# 2) Master timeout from the point of view of slaves (data, pings).
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+# 3) Slave timeout from the point of view of masters (REPLCONF ACK pings).
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+#
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+# It is important to make sure that this value is greater than the value
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+# specified for repl-ping-slave-period otherwise a timeout will be detected
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+# every time there is low traffic between the master and the slave.
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+#
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+# repl-timeout 60
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+
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+# Disable TCP_NODELAY on the slave socket after SYNC?
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+#
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+# If you select "yes" Redis will use a smaller number of TCP packets and
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+# less bandwidth to send data to slaves. But this can add a delay for
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+# the data to appear on the slave side, up to 40 milliseconds with
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+# Linux kernels using a default configuration.
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+#
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+# If you select "no" the delay for data to appear on the slave side will
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+# be reduced but more bandwidth will be used for replication.
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+#
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+# By default we optimize for low latency, but in very high traffic conditions
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+# or when the master and slaves are many hops away, turning this to "yes" may
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+# be a good idea.
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+repl-disable-tcp-nodelay no
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+
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+# Set the replication backlog size. The backlog is a buffer that accumulates
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+# slave data when slaves are disconnected for some time, so that when a slave
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+# wants to reconnect again, often a full resync is not needed, but a partial
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+# resync is enough, just passing the portion of data the slave missed while
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+# disconnected.
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+#
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+# The bigger the replication backlog, the longer the time the slave can be
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+# disconnected and later be able to perform a partial resynchronization.
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+#
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+# The backlog is only allocated once there is at least a slave connected.
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+#
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+# repl-backlog-size 1mb
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+
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+# After a master has no longer connected slaves for some time, the backlog
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+# will be freed. The following option configures the amount of seconds that
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+# need to elapse, starting from the time the last slave disconnected, for
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+# the backlog buffer to be freed.
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+#
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+# A value of 0 means to never release the backlog.
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+#
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+# repl-backlog-ttl 3600
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+
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+# The slave priority is an integer number published by Redis in the INFO output.
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+# It is used by Redis Sentinel in order to select a slave to promote into a
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+# master if the master is no longer working correctly.
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+#
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+# A slave with a low priority number is considered better for promotion, so
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+# for instance if there are three slaves with priority 10, 100, 25 Sentinel will
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+# pick the one with priority 10, that is the lowest.
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+#
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+# However a special priority of 0 marks the slave as not able to perform the
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+# role of master, so a slave with priority of 0 will never be selected by
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+# Redis Sentinel for promotion.
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+#
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+# By default the priority is 100.
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+slave-priority 100
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+
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+# It is possible for a master to stop accepting writes if there are less than
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+# N slaves connected, having a lag less or equal than M seconds.
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+#
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+# The N slaves need to be in "online" state.
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+#
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+# The lag in seconds, that must be <= the specified value, is calculated from
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+# the last ping received from the slave, that is usually sent every second.
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+#
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+# This option does not GUARANTEE that N replicas will accept the write, but
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+# will limit the window of exposure for lost writes in case not enough slaves
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+# are available, to the specified number of seconds.
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+#
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+# For example to require at least 3 slaves with a lag <= 10 seconds use:
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+#
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+# min-slaves-to-write 3
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+# min-slaves-max-lag 10
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+#
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+# Setting one or the other to 0 disables the feature.
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+#
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|
+# By default min-slaves-to-write is set to 0 (feature disabled) and
|
|
|
+# min-slaves-max-lag is set to 10.
|
|
|
+
|
|
|
+################################## SECURITY ###################################
|
|
|
+
|
|
|
+# Require clients to issue AUTH <PASSWORD> before processing any other
|
|
|
+# commands. This might be useful in environments in which you do not trust
|
|
|
+# others with access to the host running redis-server.
|
|
|
+#
|
|
|
+# This should stay commented out for backward compatibility and because most
|
|
|
+# people do not need auth (e.g. they run their own servers).
|
|
|
+#
|
|
|
+# Warning: since Redis is pretty fast an outside user can try up to
|
|
|
+# 150k passwords per second against a good box. This means that you should
|
|
|
+# use a very strong password otherwise it will be very easy to break.
|
|
|
+#
|
|
|
+# requirepass foobared
|
|
|
+
|
|
|
+# Command renaming.
|
|
|
+#
|
|
|
+# It is possible to change the name of dangerous commands in a shared
|
|
|
+# environment. For instance the CONFIG command may be renamed into something
|
|
|
+# hard to guess so that it will still be available for internal-use tools
|
|
|
+# but not available for general clients.
|
|
|
+#
|
|
|
+# Example:
|
|
|
+#
|
|
|
+# rename-command CONFIG b840fc02d524045429941cc15f59e41cb7be6c52
|
|
|
+#
|
|
|
+# It is also possible to completely kill a command by renaming it into
|
|
|
+# an empty string:
|
|
|
+#
|
|
|
+# rename-command CONFIG ""
|
|
|
+#
|
|
|
+# Please note that changing the name of commands that are logged into the
|
|
|
+# AOF file or transmitted to slaves may cause problems.
|
|
|
+
|
|
|
+################################### LIMITS ####################################
|
|
|
+
|
|
|
+# Set the max number of connected clients at the same time. By default
|
|
|
+# this limit is set to 10000 clients, however if the Redis server is not
|
|
|
+# able to configure the process file limit to allow for the specified limit
|
|
|
+# the max number of allowed clients is set to the current file limit
|
|
|
+# minus 32 (as Redis reserves a few file descriptors for internal uses).
|
|
|
+#
|
|
|
+# Once the limit is reached Redis will close all the new connections sending
|
|
|
+# an error 'max number of clients reached'.
|
|
|
+#
|
|
|
+# maxclients 10000
|
|
|
+
|
|
|
+# Don't use more memory than the specified amount of bytes.
|
|
|
+# When the memory limit is reached Redis will try to remove keys
|
|
|
+# according to the eviction policy selected (see maxmemory-policy).
|
|
|
+#
|
|
|
+# If Redis can't remove keys according to the policy, or if the policy is
|
|
|
+# set to 'noeviction', Redis will start to reply with errors to commands
|
|
|
+# that would use more memory, like SET, LPUSH, and so on, and will continue
|
|
|
+# to reply to read-only commands like GET.
|
|
|
+#
|
|
|
+# This option is usually useful when using Redis as an LRU cache, or to set
|
|
|
+# a hard memory limit for an instance (using the 'noeviction' policy).
|
|
|
+#
|
|
|
+# WARNING: If you have slaves attached to an instance with maxmemory on,
|
|
|
+# the size of the output buffers needed to feed the slaves are subtracted
|
|
|
+# from the used memory count, so that network problems / resyncs will
|
|
|
+# not trigger a loop where keys are evicted, and in turn the output
|
|
|
+# buffer of slaves is full with DELs of keys evicted triggering the deletion
|
|
|
+# of more keys, and so forth until the database is completely emptied.
|
|
|
+#
|
|
|
+# In short... if you have slaves attached it is suggested that you set a lower
|
|
|
+# limit for maxmemory so that there is some free RAM on the system for slave
|
|
|
+# output buffers (but this is not needed if the policy is 'noeviction').
|
|
|
+#
|
|
|
+# maxmemory <bytes>
|
|
|
+
|
|
|
+# MAXMEMORY POLICY: how Redis will select what to remove when maxmemory
|
|
|
+# is reached. You can select among five behaviors:
|
|
|
+#
|
|
|
+# volatile-lru -> remove the key with an expire set using an LRU algorithm
|
|
|
+# allkeys-lru -> remove any key according to the LRU algorithm
|
|
|
+# volatile-random -> remove a random key with an expire set
|
|
|
+# allkeys-random -> remove a random key, any key
|
|
|
+# volatile-ttl -> remove the key with the nearest expire time (minor TTL)
|
|
|
+# noeviction -> don't expire at all, just return an error on write operations
|
|
|
+#
|
|
|
+# Note: with any of the above policies, Redis will return an error on write
|
|
|
+# operations, when there are no suitable keys for eviction.
|
|
|
+#
|
|
|
+# At the date of writing these commands are: set setnx setex append
|
|
|
+# incr decr rpush lpush rpushx lpushx linsert lset rpoplpush sadd
|
|
|
+# sinter sinterstore sunion sunionstore sdiff sdiffstore zadd zincrby
|
|
|
+# zunionstore zinterstore hset hsetnx hmset hincrby incrby decrby
|
|
|
+# getset mset msetnx exec sort
|
|
|
+#
|
|
|
+# The default is:
|
|
|
+#
|
|
|
+# maxmemory-policy noeviction
|
|
|
+
|
|
|
+# LRU and minimal TTL algorithms are not precise algorithms but approximated
|
|
|
+# algorithms (in order to save memory), so you can tune it for speed or
|
|
|
+# accuracy. For default Redis will check five keys and pick the one that was
|
|
|
+# used less recently, you can change the sample size using the following
|
|
|
+# configuration directive.
|
|
|
+#
|
|
|
+# The default of 5 produces good enough results. 10 Approximates very closely
|
|
|
+# true LRU but costs a bit more CPU. 3 is very fast but not very accurate.
|
|
|
+#
|
|
|
+# maxmemory-samples 5
|
|
|
+
|
|
|
+############################## APPEND ONLY MODE ###############################
|
|
|
+
|
|
|
+# By default Redis asynchronously dumps the dataset on disk. This mode is
|
|
|
+# good enough in many applications, but an issue with the Redis process or
|
|
|
+# a power outage may result into a few minutes of writes lost (depending on
|
|
|
+# the configured save points).
|
|
|
+#
|
|
|
+# The Append Only File is an alternative persistence mode that provides
|
|
|
+# much better durability. For instance using the default data fsync policy
|
|
|
+# (see later in the config file) Redis can lose just one second of writes in a
|
|
|
+# dramatic event like a server power outage, or a single write if something
|
|
|
+# wrong with the Redis process itself happens, but the operating system is
|
|
|
+# still running correctly.
|
|
|
+#
|
|
|
+# AOF and RDB persistence can be enabled at the same time without problems.
|
|
|
+# If the AOF is enabled on startup Redis will load the AOF, that is the file
|
|
|
+# with the better durability guarantees.
|
|
|
+#
|
|
|
+# Please check http://redis.io/topics/persistence for more information.
|
|
|
+
|
|
|
+appendonly no
|
|
|
+
|
|
|
+# The name of the append only file (default: "appendonly.aof")
|
|
|
+
|
|
|
+appendfilename "appendonly.aof"
|
|
|
+
|
|
|
+# The fsync() call tells the Operating System to actually write data on disk
|
|
|
+# instead of waiting for more data in the output buffer. Some OS will really flush
|
|
|
+# data on disk, some other OS will just try to do it ASAP.
|
|
|
+#
|
|
|
+# Redis supports three different modes:
|
|
|
+#
|
|
|
+# no: don't fsync, just let the OS flush the data when it wants. Faster.
|
|
|
+# always: fsync after every write to the append only log. Slow, Safest.
|
|
|
+# everysec: fsync only one time every second. Compromise.
|
|
|
+#
|
|
|
+# The default is "everysec", as that's usually the right compromise between
|
|
|
+# speed and data safety. It's up to you to understand if you can relax this to
|
|
|
+# "no" that will let the operating system flush the output buffer when
|
|
|
+# it wants, for better performances (but if you can live with the idea of
|
|
|
+# some data loss consider the default persistence mode that's snapshotting),
|
|
|
+# or on the contrary, use "always" that's very slow but a bit safer than
|
|
|
+# everysec.
|
|
|
+#
|
|
|
+# More details please check the following article:
|
|
|
+# http://antirez.com/post/redis-persistence-demystified.html
|
|
|
+#
|
|
|
+# If unsure, use "everysec".
|
|
|
+
|
|
|
+# appendfsync always
|
|
|
+appendfsync everysec
|
|
|
+# appendfsync no
|
|
|
+
|
|
|
+# When the AOF fsync policy is set to always or everysec, and a background
|
|
|
+# saving process (a background save or AOF log background rewriting) is
|
|
|
+# performing a lot of I/O against the disk, in some Linux configurations
|
|
|
+# Redis may block too long on the fsync() call. Note that there is no fix for
|
|
|
+# this currently, as even performing fsync in a different thread will block
|
|
|
+# our synchronous write(2) call.
|
|
|
+#
|
|
|
+# In order to mitigate this problem it's possible to use the following option
|
|
|
+# that will prevent fsync() from being called in the main process while a
|
|
|
+# BGSAVE or BGREWRITEAOF is in progress.
|
|
|
+#
|
|
|
+# This means that while another child is saving, the durability of Redis is
|
|
|
+# the same as "appendfsync none". In practical terms, this means that it is
|
|
|
+# possible to lose up to 30 seconds of log in the worst scenario (with the
|
|
|
+# default Linux settings).
|
|
|
+#
|
|
|
+# If you have latency problems turn this to "yes". Otherwise leave it as
|
|
|
+# "no" that is the safest pick from the point of view of durability.
|
|
|
+
|
|
|
+no-appendfsync-on-rewrite no
|
|
|
+
|
|
|
+# Automatic rewrite of the append only file.
|
|
|
+# Redis is able to automatically rewrite the log file implicitly calling
|
|
|
+# BGREWRITEAOF when the AOF log size grows by the specified percentage.
|
|
|
+#
|
|
|
+# This is how it works: Redis remembers the size of the AOF file after the
|
|
|
+# latest rewrite (if no rewrite has happened since the restart, the size of
|
|
|
+# the AOF at startup is used).
|
|
|
+#
|
|
|
+# This base size is compared to the current size. If the current size is
|
|
|
+# bigger than the specified percentage, the rewrite is triggered. Also
|
|
|
+# you need to specify a minimal size for the AOF file to be rewritten, this
|
|
|
+# is useful to avoid rewriting the AOF file even if the percentage increase
|
|
|
+# is reached but it is still pretty small.
|
|
|
+#
|
|
|
+# Specify a percentage of zero in order to disable the automatic AOF
|
|
|
+# rewrite feature.
|
|
|
+
|
|
|
+auto-aof-rewrite-percentage 100
|
|
|
+auto-aof-rewrite-min-size 64mb
|
|
|
+
|
|
|
+# An AOF file may be found to be truncated at the end during the Redis
|
|
|
+# startup process, when the AOF data gets loaded back into memory.
|
|
|
+# This may happen when the system where Redis is running
|
|
|
+# crashes, especially when an ext4 filesystem is mounted without the
|
|
|
+# data=ordered option (however this can't happen when Redis itself
|
|
|
+# crashes or aborts but the operating system still works correctly).
|
|
|
+#
|
|
|
+# Redis can either exit with an error when this happens, or load as much
|
|
|
+# data as possible (the default now) and start if the AOF file is found
|
|
|
+# to be truncated at the end. The following option controls this behavior.
|
|
|
+#
|
|
|
+# If aof-load-truncated is set to yes, a truncated AOF file is loaded and
|
|
|
+# the Redis server starts emitting a log to inform the user of the event.
|
|
|
+# Otherwise if the option is set to no, the server aborts with an error
|
|
|
+# and refuses to start. When the option is set to no, the user requires
|
|
|
+# to fix the AOF file using the "redis-check-aof" utility before to restart
|
|
|
+# the server.
|
|
|
+#
|
|
|
+# Note that if the AOF file will be found to be corrupted in the middle
|
|
|
+# the server will still exit with an error. This option only applies when
|
|
|
+# Redis will try to read more data from the AOF file but not enough bytes
|
|
|
+# will be found.
|
|
|
+aof-load-truncated yes
|
|
|
+
|
|
|
+################################ LUA SCRIPTING ###############################
|
|
|
+
|
|
|
+# Max execution time of a Lua script in milliseconds.
|
|
|
+#
|
|
|
+# If the maximum execution time is reached Redis will log that a script is
|
|
|
+# still in execution after the maximum allowed time and will start to
|
|
|
+# reply to queries with an error.
|
|
|
+#
|
|
|
+# When a long running script exceeds the maximum execution time only the
|
|
|
+# SCRIPT KILL and SHUTDOWN NOSAVE commands are available. The first can be
|
|
|
+# used to stop a script that did not yet called write commands. The second
|
|
|
+# is the only way to shut down the server in the case a write command was
|
|
|
+# already issued by the script but the user doesn't want to wait for the natural
|
|
|
+# termination of the script.
|
|
|
+#
|
|
|
+# Set it to 0 or a negative value for unlimited execution without warnings.
|
|
|
+lua-time-limit 5000
|
|
|
+
|
|
|
+################################ REDIS CLUSTER ###############################
|
|
|
+#
|
|
|
+# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
+# WARNING EXPERIMENTAL: Redis Cluster is considered to be stable code, however
|
|
|
+# in order to mark it as "mature" we need to wait for a non trivial percentage
|
|
|
+# of users to deploy it in production.
|
|
|
+# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
+#
|
|
|
+# Normal Redis instances can't be part of a Redis Cluster; only nodes that are
|
|
|
+# started as cluster nodes can. In order to start a Redis instance as a
|
|
|
+# cluster node enable the cluster support uncommenting the following:
|
|
|
+#
|
|
|
+# cluster-enabled yes
|
|
|
+
|
|
|
+# Every cluster node has a cluster configuration file. This file is not
|
|
|
+# intended to be edited by hand. It is created and updated by Redis nodes.
|
|
|
+# Every Redis Cluster node requires a different cluster configuration file.
|
|
|
+# Make sure that instances running in the same system do not have
|
|
|
+# overlapping cluster configuration file names.
|
|
|
+#
|
|
|
+# cluster-config-file nodes-6379.conf
|
|
|
+
|
|
|
+# Cluster node timeout is the amount of milliseconds a node must be unreachable
|
|
|
+# for it to be considered in failure state.
|
|
|
+# Most other internal time limits are multiple of the node timeout.
|
|
|
+#
|
|
|
+# cluster-node-timeout 15000
|
|
|
+
|
|
|
+# A slave of a failing master will avoid to start a failover if its data
|
|
|
+# looks too old.
|
|
|
+#
|
|
|
+# There is no simple way for a slave to actually have a exact measure of
|
|
|
+# its "data age", so the following two checks are performed:
|
|
|
+#
|
|
|
+# 1) If there are multiple slaves able to failover, they exchange messages
|
|
|
+# in order to try to give an advantage to the slave with the best
|
|
|
+# replication offset (more data from the master processed).
|
|
|
+# Slaves will try to get their rank by offset, and apply to the start
|
|
|
+# of the failover a delay proportional to their rank.
|
|
|
+#
|
|
|
+# 2) Every single slave computes the time of the last interaction with
|
|
|
+# its master. This can be the last ping or command received (if the master
|
|
|
+# is still in the "connected" state), or the time that elapsed since the
|
|
|
+# disconnection with the master (if the replication link is currently down).
|
|
|
+# If the last interaction is too old, the slave will not try to failover
|
|
|
+# at all.
|
|
|
+#
|
|
|
+# The point "2" can be tuned by user. Specifically a slave will not perform
|
|
|
+# the failover if, since the last interaction with the master, the time
|
|
|
+# elapsed is greater than:
|
|
|
+#
|
|
|
+# (node-timeout * slave-validity-factor) + repl-ping-slave-period
|
|
|
+#
|
|
|
+# So for example if node-timeout is 30 seconds, and the slave-validity-factor
|
|
|
+# is 10, and assuming a default repl-ping-slave-period of 10 seconds, the
|
|
|
+# slave will not try to failover if it was not able to talk with the master
|
|
|
+# for longer than 310 seconds.
|
|
|
+#
|
|
|
+# A large slave-validity-factor may allow slaves with too old data to failover
|
|
|
+# a master, while a too small value may prevent the cluster from being able to
|
|
|
+# elect a slave at all.
|
|
|
+#
|
|
|
+# For maximum availability, it is possible to set the slave-validity-factor
|
|
|
+# to a value of 0, which means, that slaves will always try to failover the
|
|
|
+# master regardless of the last time they interacted with the master.
|
|
|
+# (However they'll always try to apply a delay proportional to their
|
|
|
+# offset rank).
|
|
|
+#
|
|
|
+# Zero is the only value able to guarantee that when all the partitions heal
|
|
|
+# the cluster will always be able to continue.
|
|
|
+#
|
|
|
+# cluster-slave-validity-factor 10
|
|
|
+
|
|
|
+# Cluster slaves are able to migrate to orphaned masters, that are masters
|
|
|
+# that are left without working slaves. This improves the cluster ability
|
|
|
+# to resist to failures as otherwise an orphaned master can't be failed over
|
|
|
+# in case of failure if it has no working slaves.
|
|
|
+#
|
|
|
+# Slaves migrate to orphaned masters only if there are still at least a
|
|
|
+# given number of other working slaves for their old master. This number
|
|
|
+# is the "migration barrier". A migration barrier of 1 means that a slave
|
|
|
+# will migrate only if there is at least 1 other working slave for its master
|
|
|
+# and so forth. It usually reflects the number of slaves you want for every
|
|
|
+# master in your cluster.
|
|
|
+#
|
|
|
+# Default is 1 (slaves migrate only if their masters remain with at least
|
|
|
+# one slave). To disable migration just set it to a very large value.
|
|
|
+# A value of 0 can be set but is useful only for debugging and dangerous
|
|
|
+# in production.
|
|
|
+#
|
|
|
+# cluster-migration-barrier 1
|
|
|
+
|
|
|
+# By default Redis Cluster nodes stop accepting queries if they detect there
|
|
|
+# is at least an hash slot uncovered (no available node is serving it).
|
|
|
+# This way if the cluster is partially down (for example a range of hash slots
|
|
|
+# are no longer covered) all the cluster becomes, eventually, unavailable.
|
|
|
+# It automatically returns available as soon as all the slots are covered again.
|
|
|
+#
|
|
|
+# However sometimes you want the subset of the cluster which is working,
|
|
|
+# to continue to accept queries for the part of the key space that is still
|
|
|
+# covered. In order to do so, just set the cluster-require-full-coverage
|
|
|
+# option to no.
|
|
|
+#
|
|
|
+# cluster-require-full-coverage yes
|
|
|
+
|
|
|
+# In order to setup your cluster make sure to read the documentation
|
|
|
+# available at http://redis.io web site.
|
|
|
+
|
|
|
+################################## SLOW LOG ###################################
|
|
|
+
|
|
|
+# The Redis Slow Log is a system to log queries that exceeded a specified
|
|
|
+# execution time. The execution time does not include the I/O operations
|
|
|
+# like talking with the client, sending the reply and so forth,
|
|
|
+# but just the time needed to actually execute the command (this is the only
|
|
|
+# stage of command execution where the thread is blocked and can not serve
|
|
|
+# other requests in the meantime).
|
|
|
+#
|
|
|
+# You can configure the slow log with two parameters: one tells Redis
|
|
|
+# what is the execution time, in microseconds, to exceed in order for the
|
|
|
+# command to get logged, and the other parameter is the length of the
|
|
|
+# slow log. When a new command is logged the oldest one is removed from the
|
|
|
+# queue of logged commands.
|
|
|
+
|
|
|
+# The following time is expressed in microseconds, so 1000000 is equivalent
|
|
|
+# to one second. Note that a negative number disables the slow log, while
|
|
|
+# a value of zero forces the logging of every command.
|
|
|
+slowlog-log-slower-than 10000
|
|
|
+
|
|
|
+# There is no limit to this length. Just be aware that it will consume memory.
|
|
|
+# You can reclaim memory used by the slow log with SLOWLOG RESET.
|
|
|
+slowlog-max-len 128
|
|
|
+
|
|
|
+################################ LATENCY MONITOR ##############################
|
|
|
+
|
|
|
+# The Redis latency monitoring subsystem samples different operations
|
|
|
+# at runtime in order to collect data related to possible sources of
|
|
|
+# latency of a Redis instance.
|
|
|
+#
|
|
|
+# Via the LATENCY command this information is available to the user that can
|
|
|
+# print graphs and obtain reports.
|
|
|
+#
|
|
|
+# The system only logs operations that were performed in a time equal or
|
|
|
+# greater than the amount of milliseconds specified via the
|
|
|
+# latency-monitor-threshold configuration directive. When its value is set
|
|
|
+# to zero, the latency monitor is turned off.
|
|
|
+#
|
|
|
+# By default latency monitoring is disabled since it is mostly not needed
|
|
|
+# if you don't have latency issues, and collecting data has a performance
|
|
|
+# impact, that while very small, can be measured under big load. Latency
|
|
|
+# monitoring can easily be enabled at runtime using the command
|
|
|
+# "CONFIG SET latency-monitor-threshold <milliseconds>" if needed.
|
|
|
+latency-monitor-threshold 0
|
|
|
+
|
|
|
+############################# EVENT NOTIFICATION ##############################
|
|
|
+
|
|
|
+# Redis can notify Pub/Sub clients about events happening in the key space.
|
|
|
+# This feature is documented at http://redis.io/topics/notifications
|
|
|
+#
|
|
|
+# For instance if keyspace events notification is enabled, and a client
|
|
|
+# performs a DEL operation on key "foo" stored in the Database 0, two
|
|
|
+# messages will be published via Pub/Sub:
|
|
|
+#
|
|
|
+# PUBLISH __keyspace@0__:foo del
|
|
|
+# PUBLISH __keyevent@0__:del foo
|
|
|
+#
|
|
|
+# It is possible to select the events that Redis will notify among a set
|
|
|
+# of classes. Every class is identified by a single character:
|
|
|
+#
|
|
|
+# K Keyspace events, published with __keyspace@<db>__ prefix.
|
|
|
+# E Keyevent events, published with __keyevent@<db>__ prefix.
|
|
|
+# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ...
|
|
|
+# $ String commands
|
|
|
+# l List commands
|
|
|
+# s Set commands
|
|
|
+# h Hash commands
|
|
|
+# z Sorted set commands
|
|
|
+# x Expired events (events generated every time a key expires)
|
|
|
+# e Evicted events (events generated when a key is evicted for maxmemory)
|
|
|
+# A Alias for g$lshzxe, so that the "AKE" string means all the events.
|
|
|
+#
|
|
|
+# The "notify-keyspace-events" takes as argument a string that is composed
|
|
|
+# of zero or multiple characters. The empty string means that notifications
|
|
|
+# are disabled.
|
|
|
+#
|
|
|
+# Example: to enable list and generic events, from the point of view of the
|
|
|
+# event name, use:
|
|
|
+#
|
|
|
+# notify-keyspace-events Elg
|
|
|
+#
|
|
|
+# Example 2: to get the stream of the expired keys subscribing to channel
|
|
|
+# name __keyevent@0__:expired use:
|
|
|
+#
|
|
|
+# notify-keyspace-events Ex
|
|
|
+#
|
|
|
+# By default all notifications are disabled because most users don't need
|
|
|
+# this feature and the feature has some overhead. Note that if you don't
|
|
|
+# specify at least one of K or E, no events will be delivered.
|
|
|
+notify-keyspace-events Ex
|
|
|
+
|
|
|
+############################### ADVANCED CONFIG ###############################
|
|
|
+
|
|
|
+# Hashes are encoded using a memory efficient data structure when they have a
|
|
|
+# small number of entries, and the biggest entry does not exceed a given
|
|
|
+# threshold. These thresholds can be configured using the following directives.
|
|
|
+hash-max-ziplist-entries 512
|
|
|
+hash-max-ziplist-value 64
|
|
|
+
|
|
|
+# Similarly to hashes, small lists are also encoded in a special way in order
|
|
|
+# to save a lot of space. The special representation is only used when
|
|
|
+# you are under the following limits:
|
|
|
+list-max-ziplist-entries 512
|
|
|
+list-max-ziplist-value 64
|
|
|
+
|
|
|
+# Sets have a special encoding in just one case: when a set is composed
|
|
|
+# of just strings that happen to be integers in radix 10 in the range
|
|
|
+# of 64 bit signed integers.
|
|
|
+# The following configuration setting sets the limit in the size of the
|
|
|
+# set in order to use this special memory saving encoding.
|
|
|
+set-max-intset-entries 512
|
|
|
+
|
|
|
+# Similarly to hashes and lists, sorted sets are also specially encoded in
|
|
|
+# order to save a lot of space. This encoding is only used when the length and
|
|
|
+# elements of a sorted set are below the following limits:
|
|
|
+zset-max-ziplist-entries 128
|
|
|
+zset-max-ziplist-value 64
|
|
|
+
|
|
|
+# HyperLogLog sparse representation bytes limit. The limit includes the
|
|
|
+# 16 bytes header. When an HyperLogLog using the sparse representation crosses
|
|
|
+# this limit, it is converted into the dense representation.
|
|
|
+#
|
|
|
+# A value greater than 16000 is totally useless, since at that point the
|
|
|
+# dense representation is more memory efficient.
|
|
|
+#
|
|
|
+# The suggested value is ~ 3000 in order to have the benefits of
|
|
|
+# the space efficient encoding without slowing down too much PFADD,
|
|
|
+# which is O(N) with the sparse encoding. The value can be raised to
|
|
|
+# ~ 10000 when CPU is not a concern, but space is, and the data set is
|
|
|
+# composed of many HyperLogLogs with cardinality in the 0 - 15000 range.
|
|
|
+hll-sparse-max-bytes 3000
|
|
|
+
|
|
|
+# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in
|
|
|
+# order to help rehashing the main Redis hash table (the one mapping top-level
|
|
|
+# keys to values). The hash table implementation Redis uses (see dict.c)
|
|
|
+# performs a lazy rehashing: the more operation you run into a hash table
|
|
|
+# that is rehashing, the more rehashing "steps" are performed, so if the
|
|
|
+# server is idle the rehashing is never complete and some more memory is used
|
|
|
+# by the hash table.
|
|
|
+#
|
|
|
+# The default is to use this millisecond 10 times every second in order to
|
|
|
+# actively rehash the main dictionaries, freeing memory when possible.
|
|
|
+#
|
|
|
+# If unsure:
|
|
|
+# use "activerehashing no" if you have hard latency requirements and it is
|
|
|
+# not a good thing in your environment that Redis can reply from time to time
|
|
|
+# to queries with 2 milliseconds delay.
|
|
|
+#
|
|
|
+# use "activerehashing yes" if you don't have such hard requirements but
|
|
|
+# want to free memory asap when possible.
|
|
|
+activerehashing yes
|
|
|
+
|
|
|
+# The client output buffer limits can be used to force disconnection of clients
|
|
|
+# that are not reading data from the server fast enough for some reason (a
|
|
|
+# common reason is that a Pub/Sub client can't consume messages as fast as the
|
|
|
+# publisher can produce them).
|
|
|
+#
|
|
|
+# The limit can be set differently for the three different classes of clients:
|
|
|
+#
|
|
|
+# normal -> normal clients including MONITOR clients
|
|
|
+# slave -> slave clients
|
|
|
+# pubsub -> clients subscribed to at least one pubsub channel or pattern
|
|
|
+#
|
|
|
+# The syntax of every client-output-buffer-limit directive is the following:
|
|
|
+#
|
|
|
+# client-output-buffer-limit <class> <hard limit> <soft limit> <soft seconds>
|
|
|
+#
|
|
|
+# A client is immediately disconnected once the hard limit is reached, or if
|
|
|
+# the soft limit is reached and remains reached for the specified number of
|
|
|
+# seconds (continuously).
|
|
|
+# So for instance if the hard limit is 32 megabytes and the soft limit is
|
|
|
+# 16 megabytes / 10 seconds, the client will get disconnected immediately
|
|
|
+# if the size of the output buffers reach 32 megabytes, but will also get
|
|
|
+# disconnected if the client reaches 16 megabytes and continuously overcomes
|
|
|
+# the limit for 10 seconds.
|
|
|
+#
|
|
|
+# By default normal clients are not limited because they don't receive data
|
|
|
+# without asking (in a push way), but just after a request, so only
|
|
|
+# asynchronous clients may create a scenario where data is requested faster
|
|
|
+# than it can read.
|
|
|
+#
|
|
|
+# Instead there is a default limit for pubsub and slave clients, since
|
|
|
+# subscribers and slaves receive data in a push fashion.
|
|
|
+#
|
|
|
+# Both the hard or the soft limit can be disabled by setting them to zero.
|
|
|
+client-output-buffer-limit normal 0 0 0
|
|
|
+client-output-buffer-limit slave 256mb 64mb 60
|
|
|
+client-output-buffer-limit pubsub 32mb 8mb 60
|
|
|
+
|
|
|
+# Redis calls an internal function to perform many background tasks, like
|
|
|
+# closing connections of clients in timeout, purging expired keys that are
|
|
|
+# never requested, and so forth.
|
|
|
+#
|
|
|
+# Not all tasks are performed with the same frequency, but Redis checks for
|
|
|
+# tasks to perform according to the specified "hz" value.
|
|
|
+#
|
|
|
+# By default "hz" is set to 10. Raising the value will use more CPU when
|
|
|
+# Redis is idle, but at the same time will make Redis more responsive when
|
|
|
+# there are many keys expiring at the same time, and timeouts may be
|
|
|
+# handled with more precision.
|
|
|
+#
|
|
|
+# The range is between 1 and 500, however a value over 100 is usually not
|
|
|
+# a good idea. Most users should use the default of 10 and raise this up to
|
|
|
+# 100 only in environments where very low latency is required.
|
|
|
+hz 10
|
|
|
+
|
|
|
+# When a child rewrites the AOF file, if the following option is enabled
|
|
|
+# the file will be fsync-ed every 32 MB of data generated. This is useful
|
|
|
+# in order to commit the file to the disk more incrementally and avoid
|
|
|
+# big latency spikes.
|
|
|
+aof-rewrite-incremental-fsync yes
|
stanley-king