multi bulk requests in redis-benchmark, default fsync policy changed to everysec...

[redis.git] / redis.conf

diff --git a/redis.conf b/redis.conf
index 610049ef9557c65a016c5a2ee7e2299898f6b9a3..0f5fe34efd886abef1a199571b16542cbd17bf92 100644 (file)
--- a/redis.conf
+++ b/redis.conf
@@ -19,6 +19,26 @@ port 6379
 # Close the connection after a client is idle for N seconds (0 to disable)
 timeout 300
 
 # 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)
+# 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
+
+# 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>
 # Save the DB on disk:
 #
 #   save <seconds> <changes>


@@ -30,10 +50,19 @@ timeout 300
 #   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
 #   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

+#
+#   Note: you can disable saving at all commenting all the "save" lines.
+

 save 900 1
 save 300 10
 save 60 10000
 
 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
 
 # The filename where to dump the DB
 dbfilename dump.rdb
 


@@ -41,32 +70,22 @@ dbfilename dump.rdb
 # Note that you must specify a directory not a file name.
 dir ./
 
 # Note that you must specify a directory not a file name.
 dir ./
 

-# 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
-

 ################################# 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.
 ################################# 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>
 
 # 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
 ################################## SECURITY ###################################
 
 # Require clients to issue AUTH <PASSWORD> before processing any other


@@ -75,17 +94,17 @@ databases 16
 #
 # This should stay commented out for backward compatibility and because most
 # people do not need auth (e.g. they run their own servers).
 #
 # 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
 # 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.
+# is able to open. The special value '0' means no limits.

 # Once the limit is reached Redis will close all the new connections sending
 # an error 'max number of clients reached'.
 # 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.
 # maxclients 128
 
 # Don't use more memory than the specified amount of bytes.


@@ -104,7 +123,7 @@ databases 16
 # 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.
 # 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 ###############################
 # maxmemory <bytes>
 
 ############################## APPEND ONLY MODE ###############################


@@ -121,10 +140,15 @@ databases 16
 # 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.
 # 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 yes
+appendonly no

 
 

-# The fsync() calls tells the Operating System to actually write data on disk
+# 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.
 #
 # 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.
 #


@@ -134,12 +158,91 @@ databases 16
 # always: fsync after every write to the append only log . Slow, Safest.
 # everysec: fsync only if one second passed since the last fsync. Compromise.
 #
 # 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 "no" since it's faster and anyway safer than snapshots from
-# the point of view of durability of the latest records modified.
+# 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
+# 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.
+#
+# If unsure, use "everysec".

 
 

-appendfsync no

 # appendfsync always
 # appendfsync always

-# appendfsync everysec
+appendfsync everysec
+# appendfsync 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.
+#
+# To enable VM just set 'vm-enabled' to yes, and set the following three
+# VM parameters accordingly to your needs.
+
+vm-enabled no
+# vm-enabled yes
+
+# 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.
+#
+# The swap file name may contain "%p" that is substituted with the PID of
+# the Redis process, so the default name /tmp/redis-%p.vm will work even
+# with multiple instances as Redis will use, for example, redis-811.vm
+# for one instance and redis-593.vm for another one.
+#
+# Useless to say, the best kind of disk for a Redis swap file (that's accessed
+# at random) is a Solid State Disk (SSD).
+vm-swap-file /tmp/redis-%p.vm
+
+# 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.
+#
+# With vm-max-memory 10000000 the system will swap almost 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 80% of your free RAM.
+vm-max-memory 10000000
+
+# 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 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 256
+
+# 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.
+#
+# The total swap size is vm-page-size * vm-pages
+#
+# With the default of 256-bytes memory pages and 104857600 pages Redis will
+# use a 25 GB swap file, that will use roughly 13 MB of RAM for the page table.
+#
+# 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 104857600
+
+# 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.
+#
+# The special value of 0 turn off threaded I/O and enables the blocking
+# Virtual Memory implementation.
+vm-max-threads 4

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