Linux command line view memcached run status (Shell)

Stats
To view the basic commands for the memcached status, this command allows you to see the following information:
STAT PID 22459 Process ID
STAT uptime 1027046 server running seconds
STAT time 1273043062 Server current UNIX timestamp
STAT version 1.4.4 Server version
STAT pointer_size 64 OS Word size (this server is 64-bit)
STAT rusage_user 0.040000 Process Cumulative User Time
STAT rusage_system 0.260000 Process Cumulative system time
STAT curr_connections 10 Number of currently open connections
STAT total_connections 82 Total connections that were opened
STAT connection_structures 13 Number of connection structures allocated by the server
STAT cmd_get 54 Execute Get Command Total
STAT Cmd_set 34 Execute SET command total
STAT Cmd_flush 3 points to the total number of FLUSH_ALL commands
STAT get_hits 9 Get hit count
STAT get_misses number of Get misses
STAT delete_misses 5 Delete misses
STAT delete_hits 1 Delete hit count
STAT incr_misses 0 incr number of misses
STAT incr_hits 0 incr hit count
STAT decr_misses 0 decr number of misses
STAT decr_hits 0 DECR hit count
STAT cas_misses 0 CAs misses
STAT cas_hits 0 CAs hit count
STAT Cas_badval 0 Use wipe count
STAT Auth_cmds 0
STAT auth_errors 0
STAT bytes_read 15785 Read Bytes total
STAT bytes_written 15222 Write Bytes Total
STAT limit_maxbytes 1048576 Allocated memory number (bytes)
STAT Accepting_conns 1 Number of links currently accepted
STAT Listen_disabled_num 0
STAT Threads 4 Thread Count
STAT Conn_yields 0
STAT bytes 0 Stores the item byte number
STAT Curr_items 0 Item number
STAT total_items Total number of item
STAT evictions 0 To get the total amount of space deleted item

Stats items
Outputs the item information in each slab. S
Stats Slabs
More detailed item information in the output slab
Stats sizes
Output the size and number of all item

Stats Cachedump <slab_id> <limit_num>

According to the <slab_id> output the same <slab_id> in the item information. <limit_num> is the number of outputs, when <limit_num> is 0 is the output of all item.

Manipulating memcached with Shell commands
1. Data storage (assuming key is g,value to 12345)

printf "Set G 0 0 5\r\n12345\r\n" |nc 127.0.0.1 11211

STORED

2. Data retrieval (assuming key is Zhangyan)

printf "Get g\r\n" |nc 127.0.0.1 11211

VALUE G 0 5
12345
END

3, the value is increased by 1 (assuming that key is G, and value is a positive integer)

printf "incr g 1\r\n" | NC 127.0.0.1 11211

12346

4, the value is reduced by 3 (assuming that key is G, and value is a positive integer)

printf "Decr g 3\r\n" | NC 127.0.0.1 11211

12343

5. Data deletion (assuming key is g)

printf "Delete g\r\n" | NC 127.0.0.1 11211

DELETED

6. View memcached Status

printf "stats\r\n" | NC 127.0.0.1 11211

STAT PID 3025
STAT Uptime 4120500
STAT Time 1228021767
STAT version 1.2.6
STAT Pointer_size 32
STAT Rusage_user 433.463103
STAT Rusage_system 1224.515845
STAT Curr_items 1132460
STAT Total_items 8980260
STAT bytes 1895325386
STAT curr_connections 252
STAT total_connections 547850
STAT Connection_structures 1189
STAT Cmd_get 13619685
STAT Cmd_set 8980260
STAT get_hits 6851607
STAT get_misses 6768078
STAT Evictions 0
STAT Bytes_read 160396238246
STAT Bytes_written 260080686529
STAT limit_maxbytes 2147483648
STAT Threads 1
END

7. Simulate top command to view memcached status:

Watch "printf ' stats\r\n ' | NC 127.0.0.1 11211 "

Or

Watch "Echo Stats | NC 127.0.0.1 11211 "

First, echo stats items | nc127.0.0.1 11211
STAT items:1:number 998 Slab id=1; Items: 998 (that is, 998 key values have been stored)
STAT items:1:age 604348 Slab id=1; Time already exists, unit seconds
STAT items:1:evicted 0 Slab id=1; The number of kicked out
STAT Items:1:evicted_nonzero 0
STAT Items:1:evicted_time 0
STAT Items:1:outofmemory 0
STAT Items:1:tailrepairs 0
STAT items:1:reclaimed 0
STAT items:6:number 91897 Slab id=6; Items: 91897 (that is, 91,897 key values have been stored)
STAT items:6:age 604345 Slab id=6; Time already exists, unit seconds
STAT items:6:evicted 0 Slab id=6; The number of kicked out
STAT Items:6:evicted_nonzero 0
STAT Items:6:evicted_time 0
STAT Items:6:outofmemory 0
STAT Items:6:tailrepairs 0
STAT items:6:reclaimed 0

Linux command line view memcached run status (Shell)