# 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 debug
+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
# 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
# Compress string objects using LZF when dump .rdb databases?
-# For default that's set to 'no' because uses too much CPU time.
-# You want to switch this to 'yes' only if you have a lot of very compressible
-# data inside your dataset and are using replication.
-rdbcompression no
+# 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
# 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'.
#
# 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 ###############################
# Glue small output buffers together in order to send small replies in a
projects / redis.git / blobdiff