Mac OSX中memcached安装测试

安装

一如既往，使用brew直接安装

$brew info memcachedmemcached: stable 1.4.24 (bottled)High performance, distributed memory object caching systemhttp://memcached.org/Conflicts with: mysql-clusterNot installedFrom: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/memcached.rb==> DependenciesRequired: libevent ✔==> Options--with-sasl    Enable SASL support -- disables ASCII protocol!--with-sasl-pwdb    Enable SASL with memcached's own plain text password db support -- disables ASCII protocol!==> CaveatsTo have launchd start memcached at login:  ln -sfv /usr/local/opt/memcached/*.plist ~/Library/LaunchAgentsThen to load memcached now:  launchctl load ~/Library/LaunchAgents/homebrew.mxcl.memcached.plistOr, if you don't want/need launchctl, you can just run:  /usr/local/opt/memcached/bin/memcached

$ brew install memcached==> Downloading https://homebrew.bintray.com/bottles/memcached-1.4.24.mavericks.bottle.tar.gz######################################################################## 100.0%==> Pouring memcached-1.4.24.mavericks.bottle.tar.gz==> CaveatsTo have launchd start memcached at login:  ln -sfv /usr/local/opt/memcached/*.plist ~/Library/LaunchAgentsThen to load memcached now:  launchctl load ~/Library/LaunchAgents/homebrew.mxcl.memcached.plistOr, if you don't want/need launchctl, you can just run:  /usr/local/opt/memcached/bin/memcached==> Summary��  /usr/local/Cellar/memcached/1.4.24: 10 files, 161.1K

测试

使用telnet测试：

启动memcached:

输入命令：
memcached -d -p 11211 -u nobody -c 1024 -m 64

直接使用telnet连接到memcached端口，输入命令即可：

$ telnet localhost 11211Trying 127.0.0.1...Connected to localhost.Escape character is '^]'.

保存数据

输入命令

set foo 0 0 3  bar  

显示STORED 表示成功。

数据读取：

输入命令

get foo  

得到输出：

VALUE foo 0 3barEND

查看状态

使用命令stat可以查看检查memcached状态

stat

得到输出

STAT pid 3407STAT uptime 111STAT time 1452261936STAT version 1.4.24STAT libevent 2.0.22-stableSTAT pointer_size 64STAT rusage_user 0.002362STAT rusage_system 0.003989STAT curr_connections 10STAT total_connections 11STAT connection_structures 11STAT reserved_fds 20STAT cmd_get 1STAT cmd_set 1STAT cmd_flush 0STAT cmd_touch 0STAT get_hits 1STAT get_misses 0STAT delete_misses 0STAT delete_hits 0STAT incr_misses 0STAT incr_hits 0STAT decr_misses 0STAT decr_hits 0STAT cas_misses 0STAT cas_hits 0STAT cas_badval 0STAT touch_hits 0STAT touch_misses 0STAT auth_cmds 0STAT auth_errors 0STAT bytes_read 42STAT bytes_written 40STAT limit_maxbytes 67108864STAT accepting_conns 1STAT listen_disabled_num 0STAT threads 4STAT conn_yields 0STAT hash_power_level 16STAT hash_bytes 524288STAT hash_is_expanding 0STAT malloc_fails 0STAT bytes 71STAT curr_items 1STAT total_items 1STAT expired_unfetched 0STAT evicted_unfetched 0STAT evictions 0STAT reclaimed 0STAT crawler_reclaimed 0STAT crawler_items_checked 0STAT lrutail_reflocked 0END

结束telnet，输入telnet退出命令：quit命令退出。

quitConnection closed by foreign host.

命令说明

memcached的简单启动命令

$ memcached -p 11211 -m 64m -d -vv

memcached启动选项如下：

-p  使用的TCP端口，默认为11211-m  最大内存大小默认为64m-vv 用very verbose模式启动，调试信息和错误输出到控制台-d  作为daemon在后台启动

查看memcached的详细命令：

$ memcached -hmemcached 1.4.24-p <num>      TCP port number to listen on (default: 11211)-U <num>      UDP port number to listen on (default: 11211, 0 is off)-s <file>     UNIX socket path to listen on (disables network support)-A            enable ascii "shutdown" command-a <mask>     access mask for UNIX socket, in octal (default: 0700)-l <addr>     interface to listen on (default: INADDR_ANY, all addresses)              <addr> may be specified as host:port. If you don't specify              a port number, the value you specified with -p or -U is              used. You may specify multiple addresses separated by comma              or by using -l multiple times-d            run as a daemon-r            maximize core file limit-u <username> assume identity of <username> (only when run as root)-m <num>      max memory to use for items in megabytes (default: 64 MB)-M            return error on memory exhausted (rather than removing items)-c <num>      max simultaneous connections (default: 1024)-k            lock down all paged memory.  Note that there is a              limit on how much memory you may lock.  Trying to              allocate more than that would fail, so be sure you              set the limit correctly for the user you started              the daemon with (not for -u <username> user;              under sh this is done with 'ulimit -S -l NUM_KB').-v            verbose (print errors/warnings while in event loop)-vv           very verbose (also print client commands/reponses)-vvv          extremely verbose (also print internal state transitions)-h            print this help and exit-i            print memcached and libevent license-V            print version and exit-P <file>     save PID in <file>, only used with -d option-f <factor>   chunk size growth factor (default: 1.25)-n <bytes>    minimum space allocated for key+value+flags (default: 48)-L            Try to use large memory pages (if available). Increasing              the memory page size could reduce the number of TLB misses              and improve the performance. In order to get large pages              from the OS, memcached will allocate the total item-cache              in one large chunk.-D <char>     Use <char> as the delimiter between key prefixes and IDs.              This is used for per-prefix stats reporting. The default is              ":" (colon). If this option is specified, stats collection              is turned on automatically; if not, then it may be turned on              by sending the "stats detail on" command to the server.-t <num>      number of threads to use (default: 4)-R            Maximum number of requests per event, limits the number of              requests process for a given connection to prevent               starvation (default: 20)-C            Disable use of CAS-b            Set the backlog queue limit (default: 1024)-B            Binding protocol - one of ascii, binary, or auto (default)-I            Override the size of each slab page. Adjusts max item size              (default: 1mb, min: 1k, max: 128m)-F            Disable flush_all command-o            Comma separated list of extended or experimental options              - (EXPERIMENTAL) maxconns_fast: immediately close new                connections if over maxconns limit              - hashpower: An integer multiplier for how large the hash                table should be. Can be grown at runtime if not big enough.                Set this based on "STAT hash_power_level" before a                 restart.              - tail_repair_time: Time in seconds that indicates how long to wait before                forcefully taking over the LRU tail item whose refcount has leaked.                Disabled by default; dangerous option.              - hash_algorithm: The hash table algorithm                default is jenkins hash. options: jenkins, murmur3              - lru_crawler: Enable LRU Crawler background thread              - lru_crawler_sleep: Microseconds to sleep between items                default is 100.              - lru_crawler_tocrawl: Max items to crawl per slab per run                default is 0 (unlimited)              - lru_maintainer: Enable new LRU system + background thread              - hot_lru_pct: Pct of slab memory to reserve for hot lru.                (requires lru_maintainer)              - warm_lru_pct: Pct of slab memory to reserve for warm lru.                (requires lru_maintainer)              - expirezero_does_not_evict: Items set to not expire, will not evict.                (requires lru_maintainer)