memcached启动脚本以及telnet测试
memcached -m 1024 -u root -p 11211 -c 1024 -P /var/memcached.pid -dmemcached 1.2.2
-p <num> TCP port number to listen on (default: 11211)
-U <num> UDP port number to listen on (default: 0, off)
-s <file> unix socket path to listen on (disables network support)
-l <ip_addr>interface to listen on, default is INDRR_ANY
-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 is 64 MB
-M return error on memory exhausted (rather than removing items)
-c <num> max simultaneous connections, default is 1024
-k lock down all paged memory
-v verbose (print errors/warnings while in event loop)
-vv very verbose (also print client commands/reponses)
-h print this help and exit
-i print memcached and libevent license
-b run a managed instanced (mnemonic: buckets)
-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
占用1024MB内存，并且允许最大1024个并发连接
# telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
set key 0 10 6
result
STORED
get key
VALUE key 0 6
result
END
set key 0 10 6 10秒过期，存6个字节
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