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# Redis configuration file example

# By default Redis does not run as a daemon. Use ‘yes’ if you need it.

# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.

daemonize no

# When run as a daemon, Redis write a pid file in /var/run/redis.pid by default.

# You can specify a custom pid file location here.

pidfile /var/run/redis.pid

# Accept connections on the specified port, default is 6379

port 6379

# If you want you can bind a single interface, if the bind option is not

# specified all the interfaces will listen for connections.

#

# bind 127.0.0.1

# Close the connection after a client is idle for N seconds (0 to disable)

timeout 300

# Set server verbosity to ‘debug’

# it can be one of:

# debug (a lot of information, useful for development/testing)

# notice (moderately verbose, what you want in production probably)

# warning (only very important / critical messages are logged)

loglevel debug

# Specify the log file name. Also ‘stdout’ can be used to force

# the demon to log on the standard output. Note that if you use standard

# output for logging but daemonize, logs will be sent to /dev/null

logfile stdout

# Set the number of databases. The default database is DB 0, you can select

# a different one on a per-connection basis using SELECT <dbid> where

# dbid is a number between 0 and ‘databases’-1

databases 16

################################ SNAPSHOTTING #################################

#

# Save the DB on disk:

#

# save <seconds> <changes>

#

# Will save the DB if both the given number of seconds and the given

# number of write operations against the DB occurred.

#

# In the example below the behaviour will be to save:

# after 900 sec (15 min) if at least 1 key changed

# after 300 sec (5 min) if at least 10 keys changed

# after 60 sec if at least 10000 keys changed

save 900 1

save 300 10

save 60 10000

# Compress string objects using LZF when dump .rdb databases?

# For default that’s set to ‘yes’ as it’s almost always a win.

# If you want to save some CPU in the saving child set it to ‘no’ but

# the dataset will likely be bigger if you have compressible values or keys.

rdbcompression yes

# The filename where to dump the DB

dbfilename dump.rdb

# For default save/load DB in/from the working directory

# Note that you must specify a directory not a file name.

dir ./

################################# REPLICATION #################################

# Master-Slave replication. Use slaveof to make a Redis instance a copy of

# another Redis server. Note that the configuration is local to the slave

# so for example it is possible to configure the slave to save the DB with a

# different interval, or to listen to another port, and so on.

#

# slaveof <masterip> <masterport>

# If the master is password protected (using the “requirepass” configuration

# directive below) it is possible to tell the slave to authenticate before

# starting the replication synchronization process, otherwise the master will

# refuse the slave request.

#

# masterauth <master-password>

################################## 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).

#

# requirepass foobared

################################### LIMITS ####################################

# Set the max number of connected clients at the same time. By default there

# is no limit, and it’s up to the number of file descriptors the Redis process

# is able to open. The special value ‘0’ means no limts.

# Once the limit is reached Redis will close all the new connections sending

# an error ‘max number of clients reached’.

#

# maxclients 128

# Don’t use more memory than the specified amount of bytes.

# When the memory limit is reached Redis will try to remove keys with an

# EXPIRE set. It will try to start freeing keys that are going to expire

# in little time and preserve keys with a longer time to live.

# Redis will also try to remove objects from free lists if possible.

#

# If all this fails, Redis will start to reply with errors to commands

# that will use more memory, like SET, LPUSH, and so on, and will continue

# to reply to most read-only commands like GET.

#

# WARNING: maxmemory can be a good idea mainly if you want to use Redis as a

# ‘state’ server or cache, not as a real DB. When Redis is used as a real

# database the memory usage will grow over the weeks, it will be obvious if

# it is going to use too much memory in the long run, and you’ll have the time

# to upgrade. With maxmemory after the limit is reached you’ll start to get

# errors for write operations, and this may even lead to DB inconsistency.

#

# maxmemory <bytes>

############################## APPEND ONLY MODE ###############################

# By default Redis asynchronously dumps the dataset on disk. If you can live

# with the idea that the latest records will be lost if something like a crash

# happens this is the preferred way to run Redis. If instead you care a lot

# about your data and don’t want to that a single record can get lost you should

# enable the append only mode: when this mode is enabled Redis will append

# every write operation received in the file appendonly.log. This file will

# be read on startup in order to rebuild the full dataset in memory.

#

# Note that you can have both the async dumps and the append only file if you

# like (you have to comment the “save” statements above to disable the dumps).

# Still if append only mode is enabled Redis will load the data from the

# log file at startup ignoring the dump.rdb file.

#

# The name of the append only file is “appendonly.log”

#

# IMPORTANT: Check the BGREWRITEAOF to check how to rewrite the append

# log file in background when it gets too big.

appendonly no

# The fsync() call tells the Operating System to actually write data on disk

# instead to wait 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 if one second passed since the last fsync. Compromise.

#

# The default is “always” that’s the safer of the options. It’s up to you to

# understand if you can relax this to “everysec” that will fsync every second

# or to “no” that will let the operating system flush the output buffer when

# it want, for better performances (but if you can live with the idea of

# some data loss consider the default persistence mode that’s snapshotting).

appendfsync always

# appendfsync everysec

# appendfsync no

############################### ADVANCED CONFIG ###############################

# Glue small output buffers together in order to send small replies in a

# single TCP packet. Uses a bit more CPU but most of the times it is a win

# in terms of number of queries per second. Use ‘yes’ if unsure.

glueoutputbuf yes

# Use object sharing. Can save a lot of memory if you have many common

# string in your dataset, but performs lookups against the shared objects

# pool so it uses more CPU and can be a bit slower. Usually it’s a good

# idea.

#

# When object sharing is enabled (shareobjects yes) you can use

# shareobjectspoolsize to control the size of the pool used in order to try

# object sharing. A bigger pool size will lead to better sharing capabilities.

# In general you want this value to be at least the double of the number of

# very common strings you have in your dataset.

#

# WARNING: object sharing is experimental, don’t enable this feature

# in production before of Redis 1.0-stable. Still please try this feature in

# your development environment so that we can test it better.

# shareobjects no

# shareobjectspoolsize 1024