X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/a11c87477754322863a51c22cb6a7614ba8ebaf0..9494f1f15b128ef8407d118c240d3793aff0ed82:/redis.conf diff --git a/redis.conf b/redis.conf index 22ec82e7..4760f291 100644 --- a/redis.conf +++ b/redis.conf @@ -82,6 +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 @@ -195,21 +201,27 @@ slave-serve-stale-data yes # 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 -# 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. +# When the memory limit is reached Redis will try to remove keys +# accordingly to the eviction policy selected (see maxmemmory-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 +# an 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 @@ -440,6 +452,43 @@ zset-max-ziplist-value 64 # 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