1# Redis configuration file example 2 3# Note on units: when memory size is needed, it is possible to specify 4# it in the usual form of 1k 5GB 4M and so forth: 5# 6# 1k => 1000 bytes 7# 1kb => 1024 bytes 8# 1m => 1000000 bytes 9# 1mb => 1024*1024 bytes 10# 1g => 1000000000 bytes 11# 1gb => 1024*1024*1024 bytes 12# 13# units are case insensitive so 1GB 1Gb 1gB are all the same. 14 15# By default Redis does not run as a daemon. Use 'yes' if you need it. 16# Note that Redis will write a pid file in /var/run/redis.pid when daemonized. 17daemonize no 18 19# When running daemonized, Redis writes a pid file in /var/run/redis.pid by 20# default. You can specify a custom pid file location here. 21pidfile /var/run/redis.pid 22 23# Accept connections on the specified port, default is 6379. 24# If port 0 is specified Redis will not listen on a TCP socket. 25port 6379 26 27# If you want you can bind a single interface, if the bind option is not 28# specified all the interfaces will listen for incoming connections. 29# 30# bind 127.0.0.1 31 32# Specify the path for the unix socket that will be used to listen for 33# incoming connections. There is no default, so Redis will not listen 34# on a unix socket when not specified. 35# 36# unixsocket /tmp/redis.sock 37# unixsocketperm 755 38 39# Close the connection after a client is idle for N seconds (0 to disable) 40timeout 0 41 42# TCP keepalive. 43# 44# If non-zero, use SO_KEEPALIVE to send TCP ACKs to clients in absence 45# of communication. This is useful for two reasons: 46# 47# 1) Detect dead peers. 48# 2) Take the connection alive from the point of view of network 49# equipment in the middle. 50# 51# On Linux, the specified value (in seconds) is the period used to send ACKs. 52# Note that to close the connection the double of the time is needed. 53# On other kernels the period depends on the kernel configuration. 54# 55# A reasonable value for this option is 60 seconds. 56tcp-keepalive 0 57 58# Specify the server verbosity level. 59# This can be one of: 60# debug (a lot of information, useful for development/testing) 61# verbose (many rarely useful info, but not a mess like the debug level) 62# notice (moderately verbose, what you want in production probably) 63# warning (only very important / critical messages are logged) 64loglevel notice 65 66# Specify the log file name. Also the emptry string can be used to force 67# Redis to log on the standard output. Note that if you use standard 68# output for logging but daemonize, logs will be sent to /dev/null 69logfile "" 70 71# To enable logging to the system logger, just set 'syslog-enabled' to yes, 72# and optionally update the other syslog parameters to suit your needs. 73# syslog-enabled no 74 75# Specify the syslog identity. 76# syslog-ident redis 77 78# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7. 79# syslog-facility local0 80 81# Set the number of databases. The default database is DB 0, you can select 82# a different one on a per-connection basis using SELECT <dbid> where 83# dbid is a number between 0 and 'databases'-1 84databases 16 85 86################################ SNAPSHOTTING ################################# 87# 88# Save the DB on disk: 89# 90# save <seconds> <changes> 91# 92# Will save the DB if both the given number of seconds and the given 93# number of write operations against the DB occurred. 94# 95# In the example below the behaviour will be to save: 96# after 900 sec (15 min) if at least 1 key changed 97# after 300 sec (5 min) if at least 10 keys changed 98# after 60 sec if at least 10000 keys changed 99# 100# Note: you can disable saving at all commenting all the "save" lines. 101# 102# It is also possible to remove all the previously configured save 103# points by adding a save directive with a single empty string argument 104# like in the following example: 105# 106# save "" 107 108save 900 1 109save 300 10 110save 60 10000 111 112# By default Redis will stop accepting writes if RDB snapshots are enabled 113# (at least one save point) and the latest background save failed. 114# This will make the user aware (in an hard way) that data is not persisting 115# on disk properly, otherwise chances are that no one will notice and some 116# distater will happen. 117# 118# If the background saving process will start working again Redis will 119# automatically allow writes again. 120# 121# However if you have setup your proper monitoring of the Redis server 122# and persistence, you may want to disable this feature so that Redis will 123# continue to work as usually even if there are problems with disk, 124# permissions, and so forth. 125stop-writes-on-bgsave-error yes 126 127# Compress string objects using LZF when dump .rdb databases? 128# For default that's set to 'yes' as it's almost always a win. 129# If you want to save some CPU in the saving child set it to 'no' but 130# the dataset will likely be bigger if you have compressible values or keys. 131rdbcompression yes 132 133# Since version 5 of RDB a CRC64 checksum is placed at the end of the file. 134# This makes the format more resistant to corruption but there is a performance 135# hit to pay (around 10%) when saving and loading RDB files, so you can disable it 136# for maximum performances. 137# 138# RDB files created with checksum disabled have a checksum of zero that will 139# tell the loading code to skip the check. 140rdbchecksum yes 141 142# The filename where to dump the DB 143dbfilename dump.rdb 144 145# The working directory. 146# 147# The DB will be written inside this directory, with the filename specified 148# above using the 'dbfilename' configuration directive. 149# 150# The Append Only File will also be created inside this directory. 151# 152# Note that you must specify a directory here, not a file name. 153dir ./ 154 155################################# REPLICATION ################################# 156 157# Master-Slave replication. Use slaveof to make a Redis instance a copy of 158# another Redis server. Note that the configuration is local to the slave 159# so for example it is possible to configure the slave to save the DB with a 160# different interval, or to listen to another port, and so on. 161# 162# slaveof <masterip> <masterport> 163 164# If the master is password protected (using the "requirepass" configuration 165# directive below) it is possible to tell the slave to authenticate before 166# starting the replication synchronization process, otherwise the master will 167# refuse the slave request. 168# 169# masterauth <master-password> 170 171# When a slave loses its connection with the master, or when the replication 172# is still in progress, the slave can act in two different ways: 173# 174# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will 175# still reply to client requests, possibly with out of date data, or the 176# data set may just be empty if this is the first synchronization. 177# 178# 2) if slave-serve-stale-data is set to 'no' the slave will reply with 179# an error "SYNC with master in progress" to all the kind of commands 180# but to INFO and SLAVEOF. 181# 182slave-serve-stale-data yes 183 184# You can configure a slave instance to accept writes or not. Writing against 185# a slave instance may be useful to store some ephemeral data (because data 186# written on a slave will be easily deleted after resync with the master) but 187# may also cause problems if clients are writing to it because of a 188# misconfiguration. 189# 190# Since Redis 2.6 by default slaves are read-only. 191# 192# Note: read only slaves are not designed to be exposed to untrusted clients 193# on the internet. It's just a protection layer against misuse of the instance. 194# Still a read only slave exports by default all the administrative commands 195# such as CONFIG, DEBUG, and so forth. To a limited extend you can improve 196# security of read only slaves using 'rename-command' to shadow all the 197# administrative / dangerous commands. 198slave-read-only yes 199 200# Slaves send PINGs to server in a predefined interval. It's possible to change 201# this interval with the repl_ping_slave_period option. The default value is 10 202# seconds. 203# 204# repl-ping-slave-period 10 205 206# The following option sets the replication timeout for: 207# 208# 1) Bulk transfer I/O during SYNC, from the point of view of slave. 209# 2) Master timeout from the point of view of slaves (data, pings). 210# 3) Slave timeout from the point of view of masters (REPLCONF ACK pings). 211# 212# It is important to make sure that this value is greater than the value 213# specified for repl-ping-slave-period otherwise a timeout will be detected 214# every time there is low traffic between the master and the slave. 215# 216# repl-timeout 60 217 218# Disable TCP_NODELAY on the slave socket after SYNC? 219# 220# If you select "yes" Redis will use a smaller number of TCP packets and 221# less bandwidth to send data to slaves. But this can add a delay for 222# the data to appear on the slave side, up to 40 milliseconds with 223# Linux kernels using a default configuration. 224# 225# If you select "no" the delay for data to appear on the slave side will 226# be reduced but more bandwidth will be used for replication. 227# 228# By default we optimize for low latency, but in very high traffic conditions 229# or when the master and slaves are many hops away, turning this to "yes" may 230# be a good idea. 231repl-disable-tcp-nodelay no 232 233# Set the replication backlog size. The backlog is a buffer that accumulates 234# slave data when slaves are disconnected for some time, so that when a slave 235# wants to reconnect again, often a full resync is not needed, but a partial 236# resync is enough, just passing the portion of data the slave missed while 237# disconnected. 238# 239# The biggest the replication backlog, the longer the time the slave can be 240# disconnected and later be able to perform a partial resynchronization. 241# 242# The backlog is only allocated once there is at least a slave connected. 243# 244# repl-backlog-size 1mb 245 246# After a master has no longer connected slaves for some time, the backlog 247# will be freed. The following option configures the amount of seconds that 248# need to elapse, starting from the time the last slave disconnected, for 249# the backlog buffer to be freed. 250# 251# A value of 0 means to never release the backlog. 252# 253# repl-backlog-ttl 3600 254 255# The slave priority is an integer number published by Redis in the INFO output. 256# It is used by Redis Sentinel in order to select a slave to promote into a 257# master if the master is no longer working correctly. 258# 259# A slave with a low priority number is considered better for promotion, so 260# for instance if there are three slaves with priority 10, 100, 25 Sentinel will 261# pick the one wtih priority 10, that is the lowest. 262# 263# However a special priority of 0 marks the slave as not able to perform the 264# role of master, so a slave with priority of 0 will never be selected by 265# Redis Sentinel for promotion. 266# 267# By default the priority is 100. 268slave-priority 100 269 270# It is possible for a master to stop accepting writes if there are less than 271# N slaves connected, having a lag less or equal than M seconds. 272# 273# The N slaves need to be in "online" state. 274# 275# The lag in seconds, that must be <= the specified value, is calculated from 276# the last ping received from the slave, that is usually sent every second. 277# 278# This option does not GUARANTEES that N replicas will accept the write, but 279# will limit the window of exposure for lost writes in case not enough slaves 280# are available, to the specified number of seconds. 281# 282# For example to require at least 3 slaves with a lag <= 10 seconds use: 283# 284# min-slaves-to-write 3 285# min-slaves-max-lag 10 286# 287# Setting one or the other to 0 disables the feature. 288# 289# By default min-slaves-to-write is set to 0 (feature disabled) and 290# min-slaves-max-lag is set to 10. 291 292################################## SECURITY ################################### 293 294# Require clients to issue AUTH <PASSWORD> before processing any other 295# commands. This might be useful in environments in which you do not trust 296# others with access to the host running redis-server. 297# 298# This should stay commented out for backward compatibility and because most 299# people do not need auth (e.g. they run their own servers). 300# 301# Warning: since Redis is pretty fast an outside user can try up to 302# 150k passwords per second against a good box. This means that you should 303# use a very strong password otherwise it will be very easy to break. 304# 305# requirepass foobared 306 307# Command renaming. 308# 309# It is possible to change the name of dangerous commands in a shared 310# environment. For instance the CONFIG command may be renamed into something 311# hard to guess so that it will still be available for internal-use tools 312# but not available for general clients. 313# 314# Example: 315# 316# rename-command CONFIG b840fc02d524045429941cc15f59e41cb7be6c52 317# 318# It is also possible to completely kill a command by renaming it into 319# an empty string: 320# 321# rename-command CONFIG "" 322# 323# Please note that changing the name of commands that are logged into the 324# AOF file or transmitted to slaves may cause problems. 325 326################################### LIMITS #################################### 327 328# Set the max number of connected clients at the same time. By default 329# this limit is set to 10000 clients, however if the Redis server is not 330# able to configure the process file limit to allow for the specified limit 331# the max number of allowed clients is set to the current file limit 332# minus 32 (as Redis reserves a few file descriptors for internal uses). 333# 334# Once the limit is reached Redis will close all the new connections sending 335# an error 'max number of clients reached'. 336# 337# maxclients 10000 338 339# Don't use more memory than the specified amount of bytes. 340# When the memory limit is reached Redis will try to remove keys 341# accordingly to the eviction policy selected (see maxmemmory-policy). 342# 343# If Redis can't remove keys according to the policy, or if the policy is 344# set to 'noeviction', Redis will start to reply with errors to commands 345# that would use more memory, like SET, LPUSH, and so on, and will continue 346# to reply to read-only commands like GET. 347# 348# This option is usually useful when using Redis as an LRU cache, or to set 349# an hard memory limit for an instance (using the 'noeviction' policy). 350# 351# WARNING: If you have slaves attached to an instance with maxmemory on, 352# the size of the output buffers needed to feed the slaves are subtracted 353# from the used memory count, so that network problems / resyncs will 354# not trigger a loop where keys are evicted, and in turn the output 355# buffer of slaves is full with DELs of keys evicted triggering the deletion 356# of more keys, and so forth until the database is completely emptied. 357# 358# In short... if you have slaves attached it is suggested that you set a lower 359# limit for maxmemory so that there is some free RAM on the system for slave 360# output buffers (but this is not needed if the policy is 'noeviction'). 361# 362# maxmemory <bytes> 363 364# MAXMEMORY POLICY: how Redis will select what to remove when maxmemory 365# is reached. You can select among five behaviors: 366# 367# volatile-lru -> remove the key with an expire set using an LRU algorithm 368# allkeys-lru -> remove any key accordingly to the LRU algorithm 369# volatile-random -> remove a random key with an expire set 370# allkeys-random -> remove a random key, any key 371# volatile-ttl -> remove the key with the nearest expire time (minor TTL) 372# noeviction -> don't expire at all, just return an error on write operations 373# 374# Note: with any of the above policies, Redis will return an error on write 375# operations, when there are not suitable keys for eviction. 376# 377# At the date of writing this commands are: set setnx setex append 378# incr decr rpush lpush rpushx lpushx linsert lset rpoplpush sadd 379# sinter sinterstore sunion sunionstore sdiff sdiffstore zadd zincrby 380# zunionstore zinterstore hset hsetnx hmset hincrby incrby decrby 381# getset mset msetnx exec sort 382# 383# The default is: 384# 385# maxmemory-policy volatile-lru 386 387# LRU and minimal TTL algorithms are not precise algorithms but approximated 388# algorithms (in order to save memory), so you can select as well the sample 389# size to check. For instance for default Redis will check three keys and 390# pick the one that was used less recently, you can change the sample size 391# using the following configuration directive. 392# 393# maxmemory-samples 3 394 395############################## APPEND ONLY MODE ############################### 396 397# By default Redis asynchronously dumps the dataset on disk. This mode is 398# good enough in many applications, but an issue with the Redis process or 399# a power outage may result into a few minutes of writes lost (depending on 400# the configured save points). 401# 402# The Append Only File is an alternative persistence mode that provides 403# much better durability. For instance using the default data fsync policy 404# (see later in the config file) Redis can lose just one second of writes in a 405# dramatic event like a server power outage, or a single write if something 406# wrong with the Redis process itself happens, but the operating system is 407# still running correctly. 408# 409# AOF and RDB persistence can be enabled at the same time without problems. 410# If the AOF is enabled on startup Redis will load the AOF, that is the file 411# with the better durability guarantees. 412# 413# Please check http://redis.io/topics/persistence for more information. 414 415appendonly no 416 417# The name of the append only file (default: "appendonly.aof") 418# appendfilename appendonly.aof 419 420# The fsync() call tells the Operating System to actually write data on disk 421# instead to wait for more data in the output buffer. Some OS will really flush 422# data on disk, some other OS will just try to do it ASAP. 423# 424# Redis supports three different modes: 425# 426# no: don't fsync, just let the OS flush the data when it wants. Faster. 427# always: fsync after every write to the append only log . Slow, Safest. 428# everysec: fsync only one time every second. Compromise. 429# 430# The default is "everysec", as that's usually the right compromise between 431# speed and data safety. It's up to you to understand if you can relax this to 432# "no" that will let the operating system flush the output buffer when 433# it wants, for better performances (but if you can live with the idea of 434# some data loss consider the default persistence mode that's snapshotting), 435# or on the contrary, use "always" that's very slow but a bit safer than 436# everysec. 437# 438# More details please check the following article: 439# http://antirez.com/post/redis-persistence-demystified.html 440# 441# If unsure, use "everysec". 442 443# appendfsync always 444appendfsync everysec 445# appendfsync no 446 447# When the AOF fsync policy is set to always or everysec, and a background 448# saving process (a background save or AOF log background rewriting) is 449# performing a lot of I/O against the disk, in some Linux configurations 450# Redis may block too long on the fsync() call. Note that there is no fix for 451# this currently, as even performing fsync in a different thread will block 452# our synchronous write(2) call. 453# 454# In order to mitigate this problem it's possible to use the following option 455# that will prevent fsync() from being called in the main process while a 456# BGSAVE or BGREWRITEAOF is in progress. 457# 458# This means that while another child is saving, the durability of Redis is 459# the same as "appendfsync none". In practical terms, this means that it is 460# possible to lose up to 30 seconds of log in the worst scenario (with the 461# default Linux settings). 462# 463# If you have latency problems turn this to "yes". Otherwise leave it as 464# "no" that is the safest pick from the point of view of durability. 465no-appendfsync-on-rewrite no 466 467# Automatic rewrite of the append only file. 468# Redis is able to automatically rewrite the log file implicitly calling 469# BGREWRITEAOF when the AOF log size grows by the specified percentage. 470# 471# This is how it works: Redis remembers the size of the AOF file after the 472# latest rewrite (if no rewrite has happened since the restart, the size of 473# the AOF at startup is used). 474# 475# This base size is compared to the current size. If the current size is 476# bigger than the specified percentage, the rewrite is triggered. Also 477# you need to specify a minimal size for the AOF file to be rewritten, this 478# is useful to avoid rewriting the AOF file even if the percentage increase 479# is reached but it is still pretty small. 480# 481# Specify a percentage of zero in order to disable the automatic AOF 482# rewrite feature. 483 484auto-aof-rewrite-percentage 100 485auto-aof-rewrite-min-size 64mb 486 487################################ LUA SCRIPTING ############################### 488 489# Max execution time of a Lua script in milliseconds. 490# 491# If the maximum execution time is reached Redis will log that a script is 492# still in execution after the maximum allowed time and will start to 493# reply to queries with an error. 494# 495# When a long running script exceed the maximum execution time only the 496# SCRIPT KILL and SHUTDOWN NOSAVE commands are available. The first can be 497# used to stop a script that did not yet called write commands. The second 498# is the only way to shut down the server in the case a write commands was 499# already issue by the script but the user don't want to wait for the natural 500# termination of the script. 501# 502# Set it to 0 or a negative value for unlimited execution without warnings. 503lua-time-limit 5000 504 505################################ REDIS CLUSTER ############################### 506# 507# Normal Redis instances can't be part of a Redis Cluster; only nodes that are 508# started as cluster nodes can. In order to start a Redis instance as a 509# cluster node enable the cluster support uncommenting the following: 510# 511# cluster-enabled yes 512 513# Every cluster node has a cluster configuration file. This file is not 514# intended to be edited by hand. It is created and updated by Redis nodes. 515# Every Redis Cluster node requires a different cluster configuration file. 516# Make sure that instances running in the same system does not have 517# overlapping cluster configuration file names. 518# 519# cluster-config-file nodes-6379.conf 520 521# Cluster node timeout is the amount of seconds a node must be unreachable 522# for it to be considered in failure state. 523# Most other internal time limits are multiplicators of the node timeout. 524# 525# cluster-node-timeout 15 526 527# In order to setup your cluster make sure to read the documentation 528# available at http://redis.io web site. 529 530################################## SLOW LOG ################################### 531 532# The Redis Slow Log is a system to log queries that exceeded a specified 533# execution time. The execution time does not include the I/O operations 534# like talking with the client, sending the reply and so forth, 535# but just the time needed to actually execute the command (this is the only 536# stage of command execution where the thread is blocked and can not serve 537# other requests in the meantime). 538# 539# You can configure the slow log with two parameters: one tells Redis 540# what is the execution time, in microseconds, to exceed in order for the 541# command to get logged, and the other parameter is the length of the 542# slow log. When a new command is logged the oldest one is removed from the 543# queue of logged commands. 544 545# The following time is expressed in microseconds, so 1000000 is equivalent 546# to one second. Note that a negative number disables the slow log, while 547# a value of zero forces the logging of every command. 548slowlog-log-slower-than 10000 549 550# There is no limit to this length. Just be aware that it will consume memory. 551# You can reclaim memory used by the slow log with SLOWLOG RESET. 552slowlog-max-len 128 553 554############################# Event notification ############################## 555 556# Redis can notify Pub/Sub clients about events happening in the key space. 557# This feature is documented at http://redis.io/topics/keyspace-events 558# 559# For instance if keyspace events notification is enabled, and a client 560# performs a DEL operation on key "foo" stored in the Database 0, two 561# messages will be published via Pub/Sub: 562# 563# PUBLISH __keyspace@0__:foo del 564# PUBLISH __keyevent@0__:del foo 565# 566# It is possible to select the events that Redis will notify among a set 567# of classes. Every class is identified by a single character: 568# 569# K Keyspace events, published with __keyspace@<db>__ prefix. 570# E Keyevent events, published with __keyevent@<db>__ prefix. 571# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ... 572# $ String commands 573# l List commands 574# s Set commands 575# h Hash commands 576# z Sorted set commands 577# x Expired events (events generated every time a key expires) 578# e Evicted events (events generated when a key is evicted for maxmemory) 579# A Alias for g$lshzxe, so that the "AKE" string means all the events. 580# 581# The "notify-keyspace-events" takes as argument a string that is composed 582# by zero or multiple characters. The empty string means that notifications 583# are disabled at all. 584# 585# Example: to enable list and generic events, from the point of view of the 586# event name, use: 587# 588# notify-keyspace-events Elg 589# 590# Example 2: to get the stream of the expired keys subscribing to channel 591# name __keyevent@0__:expired use: 592# 593# notify-keyspace-events Ex 594# 595# By default all notifications are disabled because most users don't need 596# this feature and the feature has some overhead. Note that if you don't 597# specify at least one of K or E, no events will be delivered. 598notify-keyspace-events "" 599 600############################### ADVANCED CONFIG ############################### 601 602# Hashes are encoded using a memory efficient data structure when they have a 603# small number of entries, and the biggest entry does not exceed a given 604# threshold. These thresholds can be configured using the following directives. 605hash-max-ziplist-entries 512 606hash-max-ziplist-value 64 607 608# Similarly to hashes, small lists are also encoded in a special way in order 609# to save a lot of space. The special representation is only used when 610# you are under the following limits: 611list-max-ziplist-entries 512 612list-max-ziplist-value 64 613 614# Sets have a special encoding in just one case: when a set is composed 615# of just strings that happens to be integers in radix 10 in the range 616# of 64 bit signed integers. 617# The following configuration setting sets the limit in the size of the 618# set in order to use this special memory saving encoding. 619set-max-intset-entries 512 620 621# Similarly to hashes and lists, sorted sets are also specially encoded in 622# order to save a lot of space. This encoding is only used when the length and 623# elements of a sorted set are below the following limits: 624zset-max-ziplist-entries 128 625zset-max-ziplist-value 64 626 627# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in 628# order to help rehashing the main Redis hash table (the one mapping top-level 629# keys to values). The hash table implementation Redis uses (see dict.c) 630# performs a lazy rehashing: the more operation you run into an hash table 631# that is rehashing, the more rehashing "steps" are performed, so if the 632# server is idle the rehashing is never complete and some more memory is used 633# by the hash table. 634# 635# The default is to use this millisecond 10 times every second in order to 636# active rehashing the main dictionaries, freeing memory when possible. 637# 638# If unsure: 639# use "activerehashing no" if you have hard latency requirements and it is 640# not a good thing in your environment that Redis can reply form time to time 641# to queries with 2 milliseconds delay. 642# 643# use "activerehashing yes" if you don't have such hard requirements but 644# want to free memory asap when possible. 645activerehashing yes 646 647# The client output buffer limits can be used to force disconnection of clients 648# that are not reading data from the server fast enough for some reason (a 649# common reason is that a Pub/Sub client can't consume messages as fast as the 650# publisher can produce them). 651# 652# The limit can be set differently for the three different classes of clients: 653# 654# normal -> normal clients 655# slave -> slave clients and MONITOR clients 656# pubsub -> clients subcribed to at least one pubsub channel or pattern 657# 658# The syntax of every client-output-buffer-limit directive is the following: 659# 660# client-output-buffer-limit <class> <hard limit> <soft limit> <soft seconds> 661# 662# A client is immediately disconnected once the hard limit is reached, or if 663# the soft limit is reached and remains reached for the specified number of 664# seconds (continuously). 665# So for instance if the hard limit is 32 megabytes and the soft limit is 666# 16 megabytes / 10 seconds, the client will get disconnected immediately 667# if the size of the output buffers reach 32 megabytes, but will also get 668# disconnected if the client reaches 16 megabytes and continuously overcomes 669# the limit for 10 seconds. 670# 671# By default normal clients are not limited because they don't receive data 672# without asking (in a push way), but just after a request, so only 673# asynchronous clients may create a scenario where data is requested faster 674# than it can read. 675# 676# Instead there is a default limit for pubsub and slave clients, since 677# subscribers and slaves receive data in a push fashion. 678# 679# Both the hard or the soft limit can be disabled by setting them to zero. 680client-output-buffer-limit normal 0 0 0 681client-output-buffer-limit slave 256mb 64mb 60 682client-output-buffer-limit pubsub 32mb 8mb 60 683 684# Redis calls an internal function to perform many background tasks, like 685# closing connections of clients in timeot, purging expired keys that are 686# never requested, and so forth. 687# 688# Not all tasks are performed with the same frequency, but Redis checks for 689# tasks to perform accordingly to the specified "hz" value. 690# 691# By default "hz" is set to 10. Raising the value will use more CPU when 692# Redis is idle, but at the same time will make Redis more responsive when 693# there are many keys expiring at the same time, and timeouts may be 694# handled with more precision. 695# 696# The range is between 1 and 500, however a value over 100 is usually not 697# a good idea. Most users should use the default of 10 and raise this up to 698# 100 only in environments where very low latency is required. 699hz 10 700 701# When a child rewrites the AOF file, if the following option is enabled 702# the file will be fsync-ed every 32 MB of data generated. This is useful 703# in order to commit the file to the disk more incrementally and avoid 704# big latency spikes. 705aof-rewrite-incremental-fsync yes 706 707################################## INCLUDES ################################### 708 709# Include one or more other config files here. This is useful if you 710# have a standard template that goes to all Redis server but also need 711# to customize a few per-server settings. Include files can include 712# other files, so use this wisely. 713# 714# include /path/to/local.conf 715# include /path/to/other.conf 716