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简单介绍redis以及ubuntu和windows下怎么安装redis和配置文件详解

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简单介绍redis以及ubuntu和windows下如何安装redis和配置文件详解

机缘巧合决定了解一下redis。

首先看个关于数据库的图,让想学数据库的同学有一个整体的概念。

这里写图片描述

好勒,下面说redis。

了解redis

Redis是一个开源,先进的key-value存储,并用于构建高性能,可扩展的Web应用程序的完美解决方案。
一句话概括就是:开源的/基于c语言的/基于内存亦可持久化的高性能的NoSql的键值对数据库。

redis存储结构丰富:字符串类型、散列类型、列表类型、集合类型、有序集合类型。

内存存储与持久化:1秒写入10万键值对、异步写入硬盘

功能丰富:用作数据库、缓存系统、队列

简单稳定:使用命令来读取数据,redis命令比sql语言简单的多
比如我们在post表中查询一个id 为1的学生SQL语句这写:

select title from post where id=1 ;

redis语句只需要一句即可:

HGET post:1 title

了解完毕我们来安装一下,很简单。

首先ubuntu下安装redis

1、打开终端,输入一下命令

$sudo apt-get update
$sudo apt-get install redis-server

这里写图片描述

确认安装。等待安装完成。

2、启动redis。

$redis-server

这里写图片描述

3、检查Redis是否在工作

$redis-cli

这里写图片描述
上面的提示127.0.0.1是本机的IP地址,6379为Redis服务器运行的端口。现在输入PING命令,回复pong这说明你已经成功地安装Redis在您的机器上。

Windows下安装redis

1、下载地址:https://github.com/dmajkic/redis/downloads。下载windows版本的redis包。最新的是双版本,32、64位都在一起。

2、下载后解压到自己的某个文件夹。我选择64位的并把让它放在:E:\redis\64bit。在文件夹中可执行的2进制文件共有5个,分别代表如下:
这里写图片描述

3、打开一个cmd窗口 使用cd命令切换目录到E:\redis\64bit 运行 redis-server.exe redis.conf
这里写图片描述

4、出现上面那个图就表示启动服务成功了,这时候别启一个cmd窗口,原来的不要关闭,不然就无法访问服务端了。

5、切换到redis目录下运行 redis-cli.exe -h 127.0.0.1 -p 6379 出现下图:
这里写图片描述
我们可以输入一个简单的测试数据测试。
当我们访问服务端时,我们观察刚刚开启的服务端能看到如下数据。
这里写图片描述

这时候,就已经完成配置了,现在说下它的的redis.conf配置文件。我摘抄了一个详细的说明,留博客备查

下面是配置相关项的说明

# Redis configuration file example  



# Note on units: when memory size is needed, it is possible to specifiy  

# it in the usual form of 1k 5GB 4M and so forth:  

#  

# 1k => 1000 bytes  

# 1kb => 1024 bytes  

# 1m => 1000000 bytes  

# 1mb => 1024*1024 bytes  

# 1g => 1000000000 bytes  

# 1gb => 1024*1024*1024 bytes  

#  

# units are case insensitive so 1GB 1Gb 1gB are all the same.  



# 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    

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  



# When running daemonized, Redis writes a pid file in /var/run/redis.pid by  

# default. You can specify a custom pid file location here.  

pidfile /var/run/redis.pid  

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  

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

# If port 0 is specified Redis will not listen on a TCP socket.  

port 6379  

指定Redis监听端口,默认端口为6379  

# If you want you can bind a single interface, if the bind option is not  

# specified all the interfaces will listen for incoming connections.  

#  

# bind 127.0.0.1  

绑定的主机地址  

# Specify the path for the unix socket that will be used to listen for  

# incoming connections. There is no default, so Redis will not listen  

# on a unix socket when not specified.  

#  

# unixsocket /tmp/redis.sock  

# unixsocketperm 755  



# Close the connection after a client is idle for N seconds (0 to disable)  

timeout 0  

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  

# 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  

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  

# Specify the log file name. Also 'stdout' can be used to force  

# Redis 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  

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  

# To enable logging to the system logger, just set 'syslog-enabled' to yes,  

# and optionally update the other syslog parameters to suit your needs.  

# syslog-enabled no  



# Specify the syslog identity.  

# syslog-ident redis  



# Specify the syslog facility.  Must be USER or between LOCAL0-LOCAL7.  

# syslog-facility local0  



# 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  

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  

################################ 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  

#  

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



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。  

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  

# 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  

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  

# The filename where to dump the DB  

dbfilename dump.rdb  

指定本地数据库文件名,默认值为dump.rdb  

# The working directory.  

#  

# The DB will be written inside this directory, with the filename specified  

# above using the 'dbfilename' configuration directive.  

#   

# Also the Append Only File will be created inside this directory.  

#   

# Note that you must specify a directory here, not a file name.  

dir ./  

指定本地数据库存放目录  

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

# 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>  

masterauth <master-password> 当master服务设置了密码保护时,slav服务连接master的密码  

# When a slave lost the connection with the master, or when the replication  

# is still in progress, the slave can act in two different ways:  

#  

# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will  

#    still reply to client requests, possibly with out of data data, or the  

#    data set may just be empty if this is the first synchronization.  

#  

# 2) if slave-serve-stale data is set to 'no' the slave will reply with  

#    an error "SYNC with master in progress" to all the kind of commands  

#    but to INFO and SLAVEOF.  

#  

slave-serve-stale-data yes  



# Slaves send PINGs to server in a predefined interval. It's possible to change  

# this interval with the repl_ping_slave_period option. The default value is 10  

# seconds.  

#  

# repl-ping-slave-period 10  



# The following option sets a timeout for both Bulk transfer I/O timeout and  

# master data or ping response timeout. The default value is 60 seconds.  

#  

# It is important to make sure that this value is greater than the value  

# specified for repl-ping-slave-period otherwise a timeout will be detected  

# every time there is low traffic between the master and the slave.  

#  

# repl-timeout 60  



################################## 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).  

#   

# Warning: since Redis is pretty fast an outside user can try up to  

# 150k passwords per second against a good box. This means that you should  

# use a very strong password otherwise it will be very easy to break.  

#  

# requirepass foobared  

 requirepass foobared 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  

# Command renaming.  

#  

# It is possilbe to change the name of dangerous commands in a shared  

# environment. For instance the CONFIG command may be renamed into something  

# of hard to guess so that it will be still available for internal-use  

# tools but not available for general clients.  

#  

# Example:  

#  

# rename-command CONFIG b840fc02d524045429941cc15f59e41cb7be6c52  

#  

# It is also possilbe to completely kill a command renaming it into  

# an empty string:  

#  

# rename-command CONFIG ""  



################################### 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 limits.  

# Once the limit is reached Redis will close all the new connections sending  

# an error 'max number of clients reached'.  

#  

# maxclients 128  

maxclients 128 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  

# 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>  

 maxmemory <bytes>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 POLICY: how Redis will select what to remove when maxmemory  

# is reached? You can select among five behavior:  

#   

# volatile-lru -> remove the key with an expire set using an LRU algorithm  

# allkeys-lru -> remove any key accordingly to the LRU algorithm  

# volatile-random -> remove a random key with an expire set  

# allkeys->random -> remove a random key, any key  

# volatile-ttl -> remove the key with the nearest expire time (minor TTL)  

# noeviction -> don't expire at all, just return an error on write operations  

#   

# Note: with all the kind of policies, Redis will return an error on write  

#       operations, when there are not suitable keys for eviction.  

#  

#       At the date of writing this commands are: set setnx setex append  

#       incr decr rpush lpush rpushx lpushx linsert lset rpoplpush sadd  

#       sinter sinterstore sunion sunionstore sdiff sdiffstore zadd zincrby  

#       zunionstore zinterstore hset hsetnx hmset hincrby incrby decrby  

#       getset mset msetnx exec sort  

#  

# The default is:  

#  

# maxmemory-policy volatile-lru  



# LRU and minimal TTL algorithms are not precise algorithms but approximated  

# algorithms (in order to save memory), so you can select as well the sample  

# size to check. For instance for default Redis will check three keys and  

# pick the one that was used less recently, you can change the sample size  

# using the following configuration directive.  

#  

# maxmemory-samples 3  



############################## 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.aof. 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.  

#  

# IMPORTANT: Check the BGREWRITEAOF to check how to rewrite the append  

# log file in background when it gets too big.  



appendonly no  

appendonly no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  

# The name of the append only file (default: "appendonly.aof")  

# appendfilename appendonly.aof  

 appendfilename appendonly.aof指定更新日志文件名,默认为appendonly.aof  

# 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 "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 always  

appendfsync everysec  

# appendfsync no  

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)  

# When the AOF fsync policy is set to always or everysec, and a background  

# saving process (a background save or AOF log background rewriting) is  

# performing a lot of I/O against the disk, in some Linux configurations  

# Redis may block too long on the fsync() call. Note that there is no fix for  

# this currently, as even performing fsync in a different thread will block  

# our synchronous write(2) call.  

#  

# In order to mitigate this problem it's possible to use the following option  

# that will prevent fsync() from being called in the main process while a  

# BGSAVE or BGREWRITEAOF is in progress.  

#  

# This means that while another child is saving the durability of Redis is  

# the same as "appendfsync none", that in pratical terms means that it is  

# possible to lost up to 30 seconds of log in the worst scenario (with the  

# default Linux settings).  

#   

# If you have latency problems turn this to "yes". Otherwise leave it as  

# "no" that is the safest pick from the point of view of durability.  

no-appendfsync-on-rewrite no  



# Automatic rewrite of the append only file.  

# Redis is able to automatically rewrite the log file implicitly calling  

# BGREWRITEAOF when the AOF log size will growth by the specified percentage.  

#   

# This is how it works: Redis remembers the size of the AOF file after the  

# latest rewrite (or if no rewrite happened since the restart, the size of  

# the AOF at startup is used).  

#  

# This base size is compared to the current size. If the current size is  

# bigger than the specified percentage, the rewrite is triggered. Also  

# you need to specify a minimal size for the AOF file to be rewritten, this  

# is useful to avoid rewriting the AOF file even if the percentage increase  

# is reached but it is still pretty small.  

#  

# Specify a precentage of zero in order to disable the automatic AOF  

# rewrite feature.  



auto-aof-rewrite-percentage 100  

auto-aof-rewrite-min-size 64mb  



################################## SLOW LOG ###################################  



# The Redis Slow Log is a system to log queries that exceeded a specified  

# execution time. The execution time does not include the I/O operations  

# like talking with the client, sending the reply and so forth,  

# but just the time needed to actually execute the command (this is the only  

# stage of command execution where the thread is blocked and can not serve  

# other requests in the meantime).  

#   

# You can configure the slow log with two parameters: one tells Redis  

# what is the execution time, in microseconds, to exceed in order for the  

# command to get logged, and the other parameter is the length of the  

# slow log. When a new command is logged the oldest one is removed from the  

# queue of logged commands.  



# The following time is expressed in microseconds, so 1000000 is equivalent  

# to one second. Note that a negative number disables the slow log, while  

# a value of zero forces the logging of every command.  

slowlog-log-slower-than 10000  



# There is no limit to this length. Just be aware that it will consume memory.  

# You can reclaim memory used by the slow log with SLOWLOG RESET.  

slowlog-max-len 1024  



################################ VIRTUAL MEMORY ###############################  



### WARNING! Virtual Memory is deprecated in Redis 2.4  

### The use of Virtual Memory is strongly discouraged.  



### WARNING! Virtual Memory is deprecated in Redis 2.4  

### The use of Virtual Memory is strongly discouraged.  



# 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  

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 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. Redis will complain if the  

# swap file is already in use.  

#  

# The best kind of storage for the Redis swap file (that's accessed at random)   

# is a Solid State Disk (SSD).  

#  

# *** WARNING *** if you are using a shared hosting the default of putting  

# the swap file under /tmp is not secure. Create a dir with access granted  

# only to Redis user and configure Redis to create the swap file there.  

vm-swap-file /tmp/redis.swap  

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-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 0 the system will swap 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 between 60 and 80% of your free RAM.  

vm-max-memory 0  

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  

# 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 32  

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  

# 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 32-bytes memory pages and 134217728 pages Redis will  

# use a 4 GB swap file, that will use 16 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 134217728  

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。  

# 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  

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  

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



# Hashes are encoded in a special way (much more memory efficient) when they  

# have at max a given numer of elements, and the biggest element does not  

# exceed a given threshold. You can configure this limits with the following  

# configuration directives.  

hash-max-zipmap-entries 512  

hash-max-zipmap-value 64  

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  

# Similarly to hashes, small lists are also encoded in a special way in order  

# to save a lot of space. The special representation is only used when  

# you are under the following limits:  

list-max-ziplist-entries 512  

list-max-ziplist-value 64  



# Sets have a special encoding in just one case: when a set is composed  

# of just strings that happens to be integers in radix 10 in the range  

# of 64 bit signed integers.  

# The following configuration setting sets the limit in the size of the  

# set in order to use this special memory saving encoding.  

set-max-intset-entries 512  



# Similarly to hashes and lists, sorted sets are also specially encoded in  

# order to save a lot of space. This encoding is only used when the length and  

# elements of a sorted set are below the following limits:  

zset-max-ziplist-entries 128  

zset-max-ziplist-value 64  



# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in  

# order to help rehashing the main Redis hash table (the one mapping top-level  

# keys to values). The hash table implementation redis uses (see dict.c)  

# performs a lazy rehashing: the more operation you run into an hash table  

# that is rhashing, the more rehashing "steps" are performed, so if the  

# server is idle the rehashing is never complete and some more memory is used  

# by the hash table.  

#   

# The default is to use this millisecond 10 times every second in order to  

# active rehashing the main dictionaries, freeing memory when possible.  

#  

# If unsure:  

# use "activerehashing no" if you have hard latency requirements and it is  

# not a good thing in your environment that Redis can reply form time to time  

# to queries with 2 milliseconds delay.  

#  

# use "activerehashing yes" if you don't have such hard requirements but  

# want to free memory asap when possible.  

activerehashing yes  



################################## INCLUDES ###################################  



# Include one or more other config files here.  This is useful if you  

# have a standard template that goes to all redis server but also need  

# to customize a few per-server settings.  Include files can include  

# other files, so use this wisely.  

#  

# include /path/to/local.conf  

# include /path/to/other.conf  

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