X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/b33ef40105391502d9e44443fd4e337c06396468..18aa2b87b6db7fa79b0596590aa385adcbc64e53:/redis.conf?ds=inline diff --git a/redis.conf b/redis.conf index a7914fd1..5a85a4ea 100644 --- a/redis.conf +++ b/redis.conf @@ -1,6 +1,6 @@ # Redis configuration file example -# Note on units: when memory size is needed, it is possible to specifiy +# Note on units: when memory size is needed, it is possible to specify # it in the usual form of 1k 5GB 4M and so forth: # # 1k => 1000 bytes @@ -20,7 +20,8 @@ daemonize no # default. You can specify a custom pid file location here. pidfile /var/run/redis.pid -# Accept connections on the specified port, default is 6379 +# Accept connections on the specified port, default is 6379. +# If port 0 is specified Redis will not listen on a TCP socket. port 6379 # If you want you can bind a single interface, if the bind option is not @@ -28,8 +29,15 @@ port 6379 # # bind 127.0.0.1 +# Specify the path for the unix socket that will be used to listen for +# incoming connections. There is no default, so Redis will not listen +# on a unix socket when not specified. +# +# unixsocket /tmp/redis.sock +# unixsocketperm 755 + # Close the connection after a client is idle for N seconds (0 to disable) -timeout 300 +timeout 0 # Set server verbosity to 'debug' # it can be one of: @@ -37,13 +45,23 @@ timeout 300 # verbose (many rarely useful info, but not a mess like the debug level) # notice (moderately verbose, what you want in production probably) # warning (only very important / critical messages are logged) -loglevel verbose +loglevel notice # Specify the log file name. Also 'stdout' can be used to force # Redis 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 +# To enable logging to the system logger, just set 'syslog-enabled' to yes, +# and optionally update the other syslog parameters to suit your needs. +# syslog-enabled no + +# Specify the syslog identity. +# syslog-ident redis + +# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7. +# syslog-facility local0 + # Set the number of databases. The default database is DB 0, you can select # a different one on a per-connection basis using SELECT where # dbid is a number between 0 and 'databases'-1 @@ -64,6 +82,12 @@ databases 16 # after 60 sec if at least 10000 keys changed # # Note: you can disable saving at all commenting all the "save" lines. +# +# It is also possible to remove all the previously configured save +# points by adding a save directive with a single empty string argument +# like in the following example: +# +# save "" save 900 1 save 300 10 @@ -104,6 +128,34 @@ dir ./ # # masterauth +# When a slave lost the connection with the master, or when the replication +# is still in progress, the slave can act in two different ways: +# +# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will +# still reply to client requests, possibly with out of date data, or the +# data set may just be empty if this is the first synchronization. +# +# 2) if slave-serve-stale data is set to 'no' the slave will reply with +# an error "SYNC with master in progress" to all the kind of commands +# but to INFO and SLAVEOF. +# +slave-serve-stale-data yes + +# Slaves send PINGs to server in a predefined interval. It's possible to change +# this interval with the repl_ping_slave_period option. The default value is 10 +# seconds. +# +# repl-ping-slave-period 10 + +# The following option sets a timeout for both Bulk transfer I/O timeout and +# master data or ping response timeout. The default value is 60 seconds. +# +# It is important to make sure that this value is greater than the value +# specified for repl-ping-slave-period otherwise a timeout will be detected +# every time there is low traffic between the master and the slave. +# +# repl-timeout 60 + ################################## SECURITY ################################### # Require clients to issue AUTH before processing any other @@ -119,15 +171,34 @@ dir ./ # # 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 +# of hard to guess so that it will be still 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 renaming it into +# an empty string: +# +# rename-command CONFIG "" + ################################### 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 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 ot 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 128 +# 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 with an @@ -156,6 +227,18 @@ dir ./ # 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 all the kind of policies, Redis will return an error on write +# operations, when there are not suitable keys for eviction. +# +# At the date of writing this 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 volatile-lru @@ -165,7 +248,7 @@ dir ./ # pick the one that was used less recently, you can change the sample size # using the following configuration directive. # -# maxmemory-sample 3 +# maxmemory-samples 3 ############################## APPEND ONLY MODE ############################### @@ -202,7 +285,7 @@ appendonly no # # The default is "everysec" 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 will let the operating system flush the output buffer when +# "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 @@ -226,7 +309,7 @@ appendfsync everysec # BGSAVE or BGREWRITEAOF is in progress. # # This means that while another child is saving the durability of Redis is -# the same as "appendfsync none", that in pratical terms means that it is +# the same as "appendfsync none", that in practical terms means that it is # possible to lost up to 30 seconds of log in the worst scenario (with the # default Linux settings). # @@ -234,97 +317,120 @@ appendfsync everysec # "no" that is the safest pick from the point of view of durability. no-appendfsync-on-rewrite no -################################ VIRTUAL MEMORY ############################### - -# Virtual Memory allows Redis to work with datasets bigger than the actual -# amount of RAM needed to hold the whole dataset in memory. -# In order to do so very used keys are taken in memory while the other keys -# are swapped into a swap file, similarly to what operating systems do -# with memory pages. +# Automatic rewrite of the append only file. +# Redis is able to automatically rewrite the log file implicitly calling +# BGREWRITEAOF when the AOF log size will growth by the specified percentage. +# +# This is how it works: Redis remembers the size of the AOF file after the +# latest rewrite (or if no rewrite 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. # -# To enable VM just set 'vm-enabled' to yes, and set the following three -# VM parameters accordingly to your needs. +# Specify a percentage of zero in order to disable the automatic AOF +# rewrite feature. -vm-enabled no -# vm-enabled yes +auto-aof-rewrite-percentage 100 +auto-aof-rewrite-min-size 64mb -# This is the path of the Redis swap file. As you can guess, swap files -# can't be shared by different Redis instances, so make sure to use a swap -# file for every redis process you are running. Redis will complain if the -# swap file is already in use. -# -# The best kind of storage for the Redis swap file (that's accessed at random) -# is a Solid State Disk (SSD). -# -# *** WARNING *** if you are using a shared hosting the default of putting -# the swap file under /tmp is not secure. Create a dir with access granted -# only to Redis user and configure Redis to create the swap file there. -vm-swap-file /tmp/redis.swap +################################ LUA SCRIPTING ############################### -# vm-max-memory configures the VM to use at max the specified amount of -# RAM. Everything that deos not fit will be swapped on disk *if* possible, that -# is, if there is still enough contiguous space in the swap file. +# Max execution time of a Lua script in milliseconds. # -# With vm-max-memory 0 the system will swap everything it can. Not a good -# default, just specify the max amount of RAM you can in bytes, but it's -# better to leave some margin. For instance specify an amount of RAM -# that's more or less between 60 and 80% of your free RAM. -vm-max-memory 0 - -# Redis swap files is split into pages. An object can be saved using multiple -# contiguous pages, but pages can't be shared between different objects. -# So if your page is too big, small objects swapped out on disk will waste -# a lot of space. If you page is too small, there is less space in the swap -# file (assuming you configured the same number of total swap file pages). +# 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. # -# If you use a lot of small objects, use a page size of 64 or 32 bytes. -# If you use a lot of big objects, use a bigger page size. -# If unsure, use the default :) -vm-page-size 32 - -# Number of total memory pages in the swap file. -# Given that the page table (a bitmap of free/used pages) is taken in memory, -# every 8 pages on disk will consume 1 byte of RAM. +# When a long running script exceed 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 commands was +# already issue by the script but the user don't want to wait for the natural +# termination of the script. # -# The total swap size is vm-page-size * vm-pages +# Set it to 0 or a negative value for unlimited execution without warnings. +lua-time-limit 5000 + +################################ REDIS CLUSTER ############################### # -# With the default of 32-bytes memory pages and 134217728 pages Redis will -# use a 4 GB swap file, that will use 16 MB of RAM for the page table. +# 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: # -# It's better to use the smallest acceptable value for your application, -# but the default is large in order to work in most conditions. -vm-pages 134217728 +# cluster-enabled yes -# Max number of VM I/O threads running at the same time. -# This threads are used to read/write data from/to swap file, since they -# also encode and decode objects from disk to memory or the reverse, a bigger -# number of threads can help with big objects even if they can't help with -# I/O itself as the physical device may not be able to couple with many -# reads/writes operations at the same time. +# 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 does not have +# overlapping cluster configuration file names. # -# The special value of 0 turn off threaded I/O and enables the blocking -# Virtual Memory implementation. -vm-max-threads 4 +# cluster-config-file nodes-6379.conf -############################### ADVANCED CONFIG ############################### +# 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. -# 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 +# 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 1024 + +############################### ADVANCED CONFIG ############################### # Hashes are encoded in a special way (much more memory efficient) when they -# have at max a given numer of elements, and the biggest element does not +# have at max a given number of elements, and the biggest element does not # exceed a given threshold. You can configure this limits with the following # configuration directives. -hash-max-zipmap-entries 64 -hash-max-zipmap-value 512 +hash-max-zipmap-entries 512 +hash-max-zipmap-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 happens 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 # 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) +# keys to values). The hash table implementation Redis uses (see dict.c) # performs a lazy rehashing: the more operation you run into an hash table -# that is rhashing, the more rehashing "steps" are performed, so if the +# 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. # @@ -340,10 +446,47 @@ hash-max-zipmap-value 512 # 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 +# slave -> slave clients and MONITOR clients +# pubsub -> clients subcribed to at least one pubsub channel or pattern +# +# The syntax of every client-output-buffer-limit directive is the following: +# +# client-output-buffer-limit +# +# 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 just setting it 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 + ################################## INCLUDES ################################### # Include one or more other config files here. This is useful if you -# have a standard template that goes to all redis server but also need +# have a standard template that goes to all Redis server but also need # to customize a few per-server settings. Include files can include # other files, so use this wisely. #