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window平台Redis安装

2013年05月28日 ⁄ 综合 ⁄ 共 21240字 ⁄ 字号 评论关闭
window平台Redis安装

redis windows安装文件下载地址:http://code.google.com/p/servicestack/wiki/RedisWindowsDownload#Download_32bit_Cygwin_builds_for_Windows

我选择的redis为最新版的安装文件,见下图:

 
Redis安装文件解压后,有以下几个文件。见下图

redis-server.exe:服务程序
redis-check-dump.exe:本地数据库检查
redis-check-aof.exe:更新日志检查
redis-benchmark.exe:性能测试,用以模拟同时由N个客户端发送M个 SETs/GETs 查询 (类似于 Apache 的ab 工具).

在解压好redis的安装文件到E:\根目录后,还需要在redis根目录增加一个redis的配置文件redis.conf,文件具体内容附件中有,不过这里我仍然把配置文件的内容贴上来:

Java代码
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  1. # Redis configuration file example   
  2.   
  3. # By default Redis does not run as a daemon. Use 'yes' if you need it.   
  4. # Note that Redis will write a pid file in /var/run/redis.pid when daemonized.   
  5. daemonize no   
  6.   
  7. # When run as a daemon, Redis write a pid file in /var/run/redis.pid by default.   
  8. # You can specify a custom pid file location here.   
  9. pidfile /var/run/redis.pid   
  10.   
  11. # Accept connections on the specified port, default is 6379  
  12. port 6379  
  13.   
  14. # If you want you can bind a single interfaceif the bind option is not   
  15. # specified all the interfaces will listen for connections.   
  16. #   
  17. # bind 127.0.0.1  
  18.   
  19. # Close the connection after a client is idle for N seconds (0 to disable)   
  20. timeout 300  
  21.   
  22. # Set server verbosity to 'debug'  
  23. # it can be one of:   
  24. # debug (a lot of information, useful for development/testing)   
  25. # notice (moderately verbose, what you want in production probably)   
  26. # warning (only very important / critical messages are logged)   
  27. loglevel debug   
  28.   
  29. # Specify the log file name. Also 'stdout' can be used to force   
  30. # the demon to log on the standard output. Note that if you use standard   
  31. # output for logging but daemonize, logs will be sent to /dev/null  
  32. logfile stdout   
  33.   
  34. # Set the number of databases. The default database is DB 0, you can select   
  35. # a different one on a per-connection basis using SELECT <dbid> where   
  36. # dbid is a number between 0 and 'databases'-1  
  37. databases 16  
  38.   
  39. ################################ SNAPSHOTTING  #################################   
  40. #   
  41. # Save the DB on disk:   
  42. #   
  43. #   save <seconds> <changes>   
  44. #   
  45. #   Will save the DB if both the given number of seconds and the given   
  46. #   number of write operations against the DB occurred.   
  47. #   
  48. #   In the example below the behaviour will be to save:   
  49. #   after 900 sec (15 min) if at least 1 key changed   
  50. #   after 300 sec (5 min) if at least 10 keys changed   
  51. #   after 60 sec if at least 10000 keys changed   
  52. save 900 1  
  53. save 300 10  
  54. save 60 10000  
  55.   
  56. # Compress string objects using LZF when dump .rdb databases?   
  57. # For default that's set to 'yes' as it's almost always a win.   
  58. # If you want to save some CPU in the saving child set it to 'no' but   
  59. # the dataset will likely be bigger if you have compressible values or keys.   
  60. rdbcompression yes   
  61.   
  62. # The filename where to dump the DB   
  63. dbfilename dump.rdb   
  64.   
  65. # For default save/load DB in/from the working directory   
  66. # Note that you must specify a directory not a file name.   
  67. dir ./   
  68.   
  69. ################################# REPLICATION #################################   
  70.   
  71. # Master-Slave replication. Use slaveof to make a Redis instance a copy of   
  72. # another Redis server. Note that the configuration is local to the slave   
  73. # so for example it is possible to configure the slave to save the DB with a   
  74. # different interval, or to listen to another port, and so on.   
  75. #   
  76. # slaveof <masterip> <masterport>   
  77.   
  78. # If the master is password protected (using the "requirepass" configuration   
  79. # directive below) it is possible to tell the slave to authenticate before   
  80. # starting the replication synchronization process, otherwise the master will   
  81. # refuse the slave request.   
  82. #   
  83. # masterauth <master-password>   
  84.   
  85. ################################## SECURITY ###################################   
  86.   
  87. # Require clients to issue AUTH <PASSWORD> before processing any other   
  88. # commands.  This might be useful in environments in which you do not trust   
  89. # others with access to the host running redis-server.   
  90. #   
  91. # This should stay commented out for backward compatibility and because most   
  92. # people do not need auth (e.g. they run their own servers).   
  93. #   
  94. # requirepass foobared   
  95.   
  96. ################################### LIMITS ####################################   
  97.   
  98. # Set the max number of connected clients at the same time. By default there   
  99. # is no limit, and it's up to the number of file descriptors the Redis process   
  100. # is able to open. The special value '0' means no limts.   
  101. # Once the limit is reached Redis will close all the new connections sending   
  102. # an error 'max number of clients reached'.   
  103. #   
  104. # maxclients 128  
  105.   
  106. # Don't use more memory than the specified amount of bytes.   
  107. # When the memory limit is reached Redis will try to remove keys with an   
  108. # EXPIRE set. It will try to start freeing keys that are going to expire   
  109. # in little time and preserve keys with a longer time to live.   
  110. # Redis will also try to remove objects from free lists if possible.   
  111. #   
  112. # If all this fails, Redis will start to reply with errors to commands   
  113. # that will use more memory, like SET, LPUSH, and so on, and will continue  
  114. # to reply to most read-only commands like GET.   
  115. #   
  116. # WARNING: maxmemory can be a good idea mainly if you want to use Redis as a   
  117. 'state' server or cache, not as a real DB. When Redis is used as a real   
  118. # database the memory usage will grow over the weeks, it will be obvious if  
  119. # it is going to use too much memory in the long run, and you'll have the time   
  120. # to upgrade. With maxmemory after the limit is reached you'll start to get   
  121. # errors for write operations, and this may even lead to DB inconsistency.   
  122. #   
  123. # maxmemory <bytes>   
  124.   
  125. ############################## APPEND ONLY MODE ###############################   
  126.   
  127. # By default Redis asynchronously dumps the dataset on disk. If you can live   
  128. # with the idea that the latest records will be lost if something like a crash   
  129. # happens this is the preferred way to run Redis. If instead you care a lot   
  130. # about your data and don't want to that a single record can get lost you should   
  131. # enable the append only mode: when this mode is enabled Redis will append   
  132. # every write operation received in the file appendonly.log. This file will   
  133. # be read on startup in order to rebuild the full dataset in memory.   
  134. #   
  135. # Note that you can have both the async dumps and the append only file if you   
  136. # like (you have to comment the "save" statements above to disable the dumps).   
  137. # Still if append only mode is enabled Redis will load the data from the   
  138. # log file at startup ignoring the dump.rdb file.   
  139. #   
  140. # The name of the append only file is "appendonly.log"  
  141. #   
  142. # IMPORTANT: Check the BGREWRITEAOF to check how to rewrite the append   
  143. # log file in background when it gets too big.   
  144.   
  145. appendonly no   
  146.   
  147. # The fsync() call tells the Operating System to actually write data on disk   
  148. # instead to wait for more data in the output buffer. Some OS will really flush   
  149. # data on disk, some other OS will just try to do it ASAP.   
  150. #   
  151. # Redis supports three different modes:   
  152. #   
  153. # no: don't fsync, just let the OS flush the data when it wants. Faster.   
  154. # always: fsync after every write to the append only log . Slow, Safest.   
  155. # everysec: fsync only if one second passed since the last fsync. Compromise.   
  156. #   
  157. # The default is "always" that's the safer of the options. It's up to you to   
  158. # understand if you can relax this to "everysec" that will fsync every second   
  159. # or to "no" that will let the operating system flush the output buffer when   
  160. # it want, for better performances (but if you can live with the idea of   
  161. # some data loss consider the default persistence mode that's snapshotting).   
  162.   
  163. appendfsync always   
  164. # appendfsync everysec   
  165. # appendfsync no   
  166.   
  167. ############################### ADVANCED CONFIG ###############################   
  168.   
  169. # Glue small output buffers together in order to send small replies in a   
  170. # single TCP packet. Uses a bit more CPU but most of the times it is a win   
  171. # in terms of number of queries per second. Use 'yes' if unsure.   
  172. glueoutputbuf yes   
  173.   
  174. # Use object sharing. Can save a lot of memory if you have many common   
  175. # string in your dataset, but performs lookups against the shared objects   
  176. # pool so it uses more CPU and can be a bit slower. Usually it's a good   
  177. # idea.   
  178. #   
  179. # When object sharing is enabled (shareobjects yes) you can use   
  180. # shareobjectspoolsize to control the size of the pool used in order to try  
  181. # object sharing. A bigger pool size will lead to better sharing capabilities.   
  182. # In general you want this value to be at least the double of the number of   
  183. # very common strings you have in your dataset.   
  184. #   
  185. # WARNING: object sharing is experimental, don't enable this feature   
  186. # in production before of Redis 1.0-stable. Still please try this feature in   
  187. # your development environment so that we can test it better.   
  188. # shareobjects no   
  189. # shareobjectspoolsize 1024  
# Redis configuration file example

# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
daemonize no

# When run as a daemon, Redis write a pid file in /var/run/redis.pid by default.
# You can specify a custom pid file location here.
pidfile /var/run/redis.pid

# Accept connections on the specified port, default is 6379
port 6379

# If you want you can bind a single interface, if the bind option is not
# specified all the interfaces will listen for connections.
#
# bind 127.0.0.1

# 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)
# 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

################################ SNAPSHOTTING  #################################
#
# Save the DB on disk:
#
#   save <seconds> <changes>
#
#   Will save the DB if both the given number of seconds and the given
#   number of write operations against the DB occurred.
#
#   In the example below the behaviour will be to save:
#   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
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

# For default save/load DB in/from the working directory
# Note that you must specify a directory not a file name.
dir ./

################################# 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>

# 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
# commands.  This might be useful in environments in which you do not trust
# others with access to the host running redis-server.
#
# 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
# is able to open. The special value '0' means no limts.
# 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.
# 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.
#
# maxmemory <bytes>

############################## APPEND ONLY MODE ###############################

# By default Redis asynchronously dumps the dataset on disk. If you can live
# with the idea that the latest records will be lost if something like a crash
# happens this is the preferred way to run Redis. If instead you care a lot
# about your data and don't want to that a single record can get lost you should
# enable the append only mode: when this mode is enabled Redis will append
# every write operation received in the file appendonly.log. This file will
# be read on startup in order to rebuild the full dataset in memory.
#
# Note that you can have both the async dumps and the append only file if you
# 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 no

# 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.
#
# Redis supports three different modes:
#
# no: don't fsync, just let the OS flush the data when it wants. Faster.
# 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 "always" that's the safer of the options. It's up to you to
# understand if you can relax this to "everysec" that will fsync every second
# or to "no" that will let the operating system flush the output buffer when
# it want, for better performances (but if you can live with the idea of
# some data loss consider the default persistence mode that's snapshotting).

appendfsync always
# appendfsync everysec
# appendfsync no

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

# 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

# Use object sharing. Can save a lot of memory if you have many common
# string in your dataset, but performs lookups against the shared objects
# pool so it uses more CPU and can be a bit slower. Usually it's a good
# idea.
#
# When object sharing is enabled (shareobjects yes) you can use
# shareobjectspoolsize to control the size of the pool used in order to try
# object sharing. A bigger pool size will lead to better sharing capabilities.
# In general you want this value to be at least the double of the number of
# very common strings you have in your dataset.
#
# WARNING: object sharing is experimental, don't enable this feature
# in production before of Redis 1.0-stable. Still please try this feature in
# your development environment so that we can test it better.
# shareobjects no
# shareobjectspoolsize 1024

将附件中的redis_conf.rar解压下来放到redis的根目录中即可。到此,redis的安装已经完毕。下面开始使用redis数据库。

启动redis:
输入命令:redis-server.exe redis.conf
启动后如下图所示:

启动cmd窗口要一直开着,关闭后则Redis服务关闭。
这时服务开启着,另外开一个窗口进行,设置客户端:
输入命令:redis-cli.exe -h 202.117.16.133 -p 6379
输入后如下图所示:

然后可以开始玩了:

设置一个Key并获取返回的值:

Java代码
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  1. $ ./redis-cli set mykey somevalue   
  2. OK   
  3. $ ./redis-cli get mykey   
  4. Somevalue  
$ ./redis-cli set mykey somevalue
OK
$ ./redis-cli get mykey
Somevalue

如何添加值到list:  

Java代码
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  1. $ ./redis-cli lpush mylist firstvalue   
  2. OK   
  3. $ ./redis-cli lpush mylist secondvalue   
  4. OK   
  5. $ ./redis-cli lpush mylist thirdvalue   
  6. OK   
  7. $ ./redis-cli lrange mylist 0 -1  
  8. . thirdvalue   
  9. . secondvalue   
  10. . firstvalue   
  11. $ ./redis-cli rpop mylist   
  12. firstvalue   
  13. $ ./redis-cli lrange mylist 0 -1  
  14. . thirdvalue   
  15. . secondvalue  
$ ./redis-cli lpush mylist firstvalue
OK
$ ./redis-cli lpush mylist secondvalue
OK
$ ./redis-cli lpush mylist thirdvalue
OK
$ ./redis-cli lrange mylist 0 -1
. thirdvalue
. secondvalue
. firstvalue
$ ./redis-cli rpop mylist
firstvalue
$ ./redis-cli lrange mylist 0 -1
. thirdvalue
. secondvalue

redis-benchmark.exe:性能测试,用以模拟同时由N个客户端发送M个 SETs/GETs 查询 (类似于 Apache 的 ab 工具).

Java代码
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  1. ./redis-benchmark -n 100000 –c 50  
  2.     ====== SET ======   
  3.     100007 requests completed in 0.88 seconds (译者注:100004 查询完成于 1.14 秒 )   
  4. 50 parallel clients (译者注:50个并发客户端)   
  5. 3 bytes payload (译者注:3字节有效载荷)   
  6. keep alive: 1 (译者注:保持1个连接)   
  7. 58.50% <= 0 milliseconds(译者注:毫秒)   
  8. 99.17% <= 1 milliseconds   
  9. 99.58% <= 2 milliseconds   
  10. 99.85% <= 3 milliseconds   
  11. 99.90% <= 6 milliseconds   
  12. 100.00% <= 9 milliseconds   
  13. 114293.71 requests per second(译者注:每秒 114293.71 次查询)  
./redis-benchmark -n 100000 –c 50
    ====== SET ======
    100007 requests completed in 0.88 seconds (译者注:100004 查询完成于 1.14 秒 )
50 parallel clients (译者注:50个并发客户端)
3 bytes payload (译者注:3字节有效载荷)
keep alive: 1 (译者注:保持1个连接)
58.50% <= 0 milliseconds(译者注:毫秒)
99.17% <= 1 milliseconds
99.58% <= 2 milliseconds
99.85% <= 3 milliseconds
99.90% <= 6 milliseconds
100.00% <= 9 milliseconds
114293.71 requests per second(译者注:每秒 114293.71 次查询)

Windows下测试并发客户端极限为60

========================================================================

linux平台Redis安装:

Java代码
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  1. wget http://code.google.com/p/redis/downloads/detail?name=redis-2.0.4.tar.gz
      
  2. tar xvzf redis-2.0.4.tar.gz   
  3. cd  redis-2.0.4  
  4. make   
  5. mkdir /home/redis   
  6. cp redis-server  /home/redis   
  7. cp redis-benchmark  /home/redis   
  8. cp redis-cli  /home/redis   
  9. cp redis.conf  /home/redis   
  10. cd  /home/redis  
wget http://code.google.com/p/redis/downloads/detail?name=redis-2.0.4.tar.gz
tar xvzf redis-2.0.4.tar.gz
cd  redis-2.0.4
make
mkdir /home/redis
cp redis-server  /home/redis
cp redis-benchmark  /home/redis
cp redis-cli  /home/redis
cp redis.conf  /home/redis
cd  /home/redis

在安装过程中可能需要用到sudo命令,可能新装的redhat虚拟机中新用户还不能使用sudo命令,因此需要手动的修改/etc/sudoers文件,命令如下:

Java代码
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  1. cd /etc   
  2. su root ##切换为root用户,同时输入密码   
  3. chmod u+w sudoers ##放开sudoers文件的写权限   
  4. ##在root ALL = (ALL) ALL下面一行增加 "你的用户名" ALL = (ALL) ALL   
  5. :wq ##保存退出   
  6. chmod u-w sudoers ##取消修改权限  
cd /etc
su root ##切换为root用户,同时输入密码
chmod u+w sudoers ##放开sudoers文件的写权限
##在root ALL = (ALL) ALL下面一行增加 "你的用户名" ALL = (ALL) ALL
:wq ##保存退出
chmod u-w sudoers ##取消修改权限

启动
./redis-server redis.conf
进入命令交互模式,两种:
1:   ./redis-cli
2:   telnet 127.0.0.1 6379       (ip接端口)

=============================================================
配置文件参数说明:

1. Redis默认不是以守护进程的方式运行,可以通过该配置项修改,使用yes启用守护进程
    daemonize no
2. 当Redis以守护进程方式运行时,Redis默认会把pid写入/var/run/redis.pid文件,可以通过pidfile指定
    pidfile /var/run/redis.pid
3. 指定Redis监听端口,默认端口为6379,作者在自己的一篇博文中解释了为什么选用6379作为默认端口,因为6379在手机按键上MERZ对应的号码,而MERZ取自意大利歌女Alessia Merz的名字

    port 6379
4. 绑定的主机地址
    bind 127.0.0.1
5.当 客户端闲置多长时间后关闭连接,如果指定为0,表示关闭该功能
    timeout 300
6. 指定日志记录级别,Redis总共支持四个级别:debug、verbose、notice、warning,默认为verbose
    loglevel verbose
7. 日志记录方式,默认为标准输出,如果配置Redis为守护进程方式运行,而这里又配置为日志记录方式为标准输出,则日志将会发送给/dev/null
    logfile stdout
8. 设置数据库的数量,默认数据库为0,可以使用SELECT <dbid>命令在连接上指定数据库id
    databases 16
9. 指定在多长时间内,有多少次更新操作,就将数据同步到数据文件,可以多个条件配合
    save <seconds> <changes>
    Redis默认配置文件中提供了三个条件:
    save 900 1
    save 300 10
    save 60 10000

    分别表示900秒(15分钟)内有1个更改,300秒(5分钟)内有10个更改以及60秒内有10000个更改。

10. 指定存储至本地数据库时是否压缩数据,默认为yes,Redis采用LZF压缩,如果为了节省CPU时间,可以关闭该选项,但会导致数据库文件变的巨大
    rdbcompression yes
11. 指定本地数据库文件名,默认值为dump.rdb
    dbfilename dump.rdb
12. 指定本地数据库存放目录
    dir ./
13. 设置当本机为slav服务时,设置master服务的IP地址及端口,在Redis启动时,它会自动从master进行数据同步
    slaveof <masterip> <masterport>
14. 当master服务设置了密码保护时,slav服务连接master的密码
    masterauth <master-password>
15. 设置Redis连接密码,如果配置了连接密码,客户端在连接Redis时需要通过AUTH <password>命令提供密码,默认关闭
    requirepass foobared
16. 设置同一时间最大客户端连接数,默认无限制,Redis可以同时打开的客户端连接数为Redis进程可以打开的最大文件描述符数,如果设置 maxclients 0,表示不作限制。当客户端连接数到达限制时,Redis会关闭新的连接并向客户端返回max number of clients reached错误信息

    maxclients 128
17. 指定Redis最大内存限制,Redis在启动时会把数据加载到内存中,达到最大内存后,Redis会先尝试清除已到期或即将到期的Key,当此方法处理 后,仍然到达最大内存设置,将无法再进行写入操作,但仍然可以进行读取操作。Redis新的vm机制,会把Key存放内存,Value会存放在swap区

    maxmemory <bytes>
18. 指定是否在每次更新操作后进行日志记录,Redis在默认情况下是异步的把数据写入磁盘,如果不开启,可能会在断电时导致一段时间内的数据丢失。因为 redis本身同步数据文件是按上面save条件来同步的,所以有的数据会在一段时间内只存在于内存中。默认为no

    appendonly no
19. 指定更新日志文件名,默认为appendonly.aof
     appendfilename appendonly.aof
20. 指定更新日志条件,共有3个可选值:
    no:表示等操作系统进行数据缓存同步到磁盘(快)
    always:表示每次更新操作后手动调用fsync()将数据写到磁盘(慢,安全)
    everysec:表示每秒同步一次(折衷,默认值)
    appendfsync everysec

21. 指定是否启用虚拟内存机制,默认值为no,简单的介绍一下,VM机制将数据分页存放,由Redis将访问量较少的页即冷数据swap到磁盘上,访问多的页面由磁盘自动换出到内存中(在后面的文章我会仔细分析Redis的VM机制)

     vm-enabled no
22. 虚拟内存文件路径,默认值为/tmp/redis.swap,不可多个Redis实例共享
     vm-swap-file /tmp/redis.swap
23. 将所有大于vm-max-memory的数据存入虚拟内存,无论vm-max-memory设置多小,所有索引数据都是内存存储的(Redis的索引数据 就是keys),也就是说,当vm-max-memory设置为0的时候,其实是所有value都存在于磁盘。默认值为0

     vm-max-memory 0
24. Redis swap文件分成了很多的page,一个对象可以保存在多个page上面,但一个page上不能被多个对象共享,vm-page-size是要根据存储的 数据大小来设定的,作者建议如果存储很多小对象,page大小最好设置为32或者64bytes;如果存储很大大对象,则可以使用更大的page,如果不 确定,就使用默认值

     vm-page-size 32
25. 设置swap文件中的page数量,由于页表(一种表示页面空闲或使用的bitmap)是在放在内存中的,,在磁盘上每8个pages将消耗1byte的内存。
     vm-pages 134217728
26. 设置访问swap文件的线程数,最好不要超过机器的核数,如果设置为0,那么所有对swap文件的操作都是串行的,可能会造成比较长时间的延迟。默认值为4
     vm-max-threads 4
27. 设置在向客户端应答时,是否把较小的包合并为一个包发送,默认为开启
    glueoutputbuf yes
28. 指定在超过一定的数量或者最大的元素超过某一临界值时,采用一种特殊的哈希算法
    hash-max-zipmap-entries 64
    hash-max-zipmap-value 512

29. 指定是否激活重置哈希,默认为开启(后面在介绍Redis的哈希算法时具体介绍)
    activerehashing yes
30. 指定包含其它的配置文件,可以在同一主机上多个Redis实例之间使用同一份配置文件,而同时各个实例又拥有自己的特定配置文件
    include /path/to/local.conf

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