*生产环境建议直接用linux
1、命令行直接运行
1.1、可以直接指定参数运行
#最大16M内存，监听11211端口，最大连接数8 memcached.exe -m 16 -p 11211 -c 8
1.2、可以注册为Windows服务，再运行
#注册为服务 memcached.exe -d install #开启服务 memcached.exe -d start #关闭服务 memcached.exe -d stop #卸载服务 memcached.exe -d uninstall
1.3、其他参数
| -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 <mask> | access mask for UNIX socket, in octal (default: 0700) |
| -l <ip_addr> | interface to listen on (default: INADDR_ANY, all addresses) |
| -s <file> | unix socket path to listen on (disables network support) |
| -a <mask> | access mask for unix socket, in octal (default 0700) |
| -l <ip_addr> | interface to listen on, default is INADDR_ANY |
| -d start | tell memcached to start |
| -d restart | tell running memcached to do a graceful restart |
| -d stop|shutdown | tell running memcached to shutdown |
| -d install | install memcached service |
| -d uninstall | uninstall memcached service |
| -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 |
| -P <file> | save PID in |
| -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) |
2、然后是用telnet进行操作
2.1、语法说明
<command name> <key> <flags> <exptime> <bytes> <data block>
| command name | 命令名称，如add，set，get，gets，delete等 |
| key | 关键字，即KV结构中的key |
| flags | 整型参数，客户机使用它存储关于键值对的额外信息 |
| exptime | 该数据的存活时间（以秒为单位，0 表示永远） |
| bytes | 存储字节数 |
| data block | 存储的数据块，即KV结构中的value |
2.2、操作示例
telnet localhost 11211 #add 用于新增KV add key01 0 0 2 11 STORED #key存在时，add操作失败 add key01 0 0 2 ab NOT_STORED #key存在时，set可以进行覆盖操作 set key01 0 0 2 ab STORED #准备测试数据 set key02 0 0 2 12 STORED add key03 0 0 2 13 STORED add key04 0 0 2 14 STORED add key05 0 0 2 15 STORED #读取数值 get key01 VALUE key01 0 2 ab END get key02 VALUE key02 0 2 12 END #一次读取多个值 get key01 key02 VALUE key01 0 2 ab VALUE key02 0 2 12 END #读取值与附加信息 gets key03 VALUE key03 0 2 12 13 END gets key04 VALUE key04 0 2 13 14 END #一次读取多个值与附加信息 gets key03 key04 VALUE key03 0 2 12 13 VALUE key04 0 2 13 14 END #修改键值（没有会进行赋值） set key01 0 0 4 abcd STORED #修改键值（参数匹配才能修改，如下面的例子，cas最后一个参数与gets同为11才能修改成功） gets key02 VALUE key02 0 2 11 12 cas key02 0 0 2 13 cd EXISTS cas key02 0 0 2 11 cd STORED #键存在，才可以修改成功 get key03 VALUE key03 0 2 13 END replace key03 0 0 2 ef STORED replace key06 0 0 2 xy NOT_STORED #在value后面追加数据 get key01 VALUE key01 0 2 cd END append key04 0 0 2 bb STORED get key01 VALUE key01 0 4 abbb END #在value前面追加数据 prepend key01 0 0 2 aa STORED get key01 VALUE key01 0 6 aacdbb END #增加或减少value数值，增加最终会溢出，减少到0后不再减少 get key05 VALUE key05 0 2 15 END incr key05 10 25 get key05 VALUE key05 0 2 25 END decr key05 20 5 decr key05 10 0 #删除键值对 delete key04 DELETED get key04 END #清空全部数据 flush_all OK
2.3、查看状态
#状态信息 stats STAT pid 5848 STAT uptime 32576 STAT time 1449759115 STAT version 1.4.4-14-g9c660c0 STAT pointer_size 32 STAT curr_connections 10 STAT total_connections 18 STAT connection_structures 11 STAT cmd_get 41 STAT cmd_set 32 STAT cmd_flush 3 STAT get_hits 22 STAT get_misses 19 STAT delete_misses 0 STAT delete_hits 1 STAT incr_misses 0 STAT incr_hits 1 STAT decr_misses 0 STAT decr_hits 2 STAT cas_misses 0 STAT cas_hits 1 STAT cas_badval 1 STAT auth_cmds 0 STAT auth_errors 0 STAT bytes_read 1883 STAT bytes_written 3276 STAT limit_maxbytes 67108864 STAT accepting_conns 1 STAT listen_disabled_num 0 STAT threads 4 STAT conn_yields 0 STAT bytes 288 STAT curr_items 5 STAT total_items 22 STAT evictions 0 END
状态说明：
| pid | memcache服务器的进程ID |
| uptime | 服务器已经运行的秒数 |
| time | 服务器当前的unix时间戳 |
| version | memcache版本 |
| pointer_size | 当前操作系统的指针大小（32位系统一般是32bit） |
| rusage_user | 进程的累计用户时间 |
| rusage_system | 进程的累计系统时间 |
| curr_items | 服务器当前存储的items数量 |
| total_items | 从服务器启动以后存储的items总数量 |
| bytes | 当前服务器存储items占用的字节数 |
| curr_connections | 当前打开着的连接数 |
| total_connections | 从服务器启动以后曾经打开过的连接数 |
| connection_structures | 服务器分配的连接构造数 |
| cmd_get | get命令（获取）总请求次数 |
| cmd_set | set命令（保存）总请求次数 |
| get_hits | 总命中次数 |
| get_misses | 总未命中次数 |
| evictions | 为获取空闲内存而删除的items数（分配给memcache的空间用满后需要删除旧的items来得到空间分配给新的items） |
| bytes_read | 总读取字节数（请求字节数） |
| bytes_written | 总发送字节数（结果字节数） |
| limit_maxbytes | 分配给memcache的内存大小（字节） |
| threads | 当前线程数 |
2.4、退出
#退出 quit Connection to host lost.
2.5、常用操作一览
| 命令 | 描述 | s示例 |
| get | Reads a value | get mykey |
| set | Set a key unconditionally | set mykey 0 60 5 |
| add | Add a new key | add newkey 0 60 5 |
| replace | Overwrite existing key | replace key 0 60 5 |
| append | Append data to existing key | append key 0 60 15 |
| prepend | Prepend data to existing key | prepend key 0 60 15 |
| incr | Increments numerical key value by given number | incr mykey 2 |
| decr | Decrements numerical key value by given number | decr mykey 5 |
| delete | Deletes an existing key | delete mykey |
| flush_all | Invalidate specific items immediately | flush_all |
| flush_all | Invalidate all items in n seconds | flush_all 900 |
| stats | Prints general statistics | stats |
| stats | Prints memory statistics | stats slabs,stats malloc |
| stats | Print higher level allocation statistics | stats items,stats detail,stats sizes |
| stats | Resets statistics | stats reset |
| version | Prints server version. | version |
| verbosity | Increases log level | verbosity |
| quit | Terminate telnet session | quit |