用check_tcp来监控memcached和redis实例
TCP OK - 0.000 second response time on port 11211 [STAT pid 17689STAT uptime 365034
STAT time 1432451978
STAT version 1.4.15
STAT libevent 1.4.13-stable
STAT pointer_size 64
STAT rusage_user 7.746822
STAT rusage_system 4.885257
STAT curr_connections 5
STAT total_connections 20
STAT connection_structures 6
STAT reserved_fds 20
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT cmd_touch 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT touch_hits 0
STAT touch_misses 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 89
STAT bytes_written 4140
STAT limit_maxbytes 2621440000
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT expired_unfetched 0
STAT evicted_unfetched 0
STAT evictions 0
STAT reclaimed]|time=0.000413s;;;0.000000;5.000000
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