View and clear memcached

Article Title: View and clear memcached. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

1. One type

Telnet localhost 200001 # Login

Stats # view status

Flush_all # Clear

Quit # exit

2. Learn another one:

Echo 'flush _ all' | nc localhost 200001

3.

1. Data Storage (assume that the key is test and the value is 12345)

Printf "set test 0 0 5 \ r \ n12345 \ r \ n" | nc 127.0.0.1 200001

STORED

2. Data Retrieval (assuming the key is test)

Printf "get test \ r \ n" | nc 127.0.0.1 200001

VALUE test 0 5

12345

END

3. Increase the value by 1 (assuming that the key is test and the value is a positive integer)

Printf "incr test 1 \ r \ n" | nc 127.0.0.1 200001

12346

4. Reduce the number by 3 (assuming that the key is test and the value is a positive integer)

Printf "decr test 3 \ r \ n" | nc 127.0.0.1 200001

12343

5. data deletion (assuming the key is test)

Printf "delete test \ r \ n" | nc 127.0.0.1 11211

DELETED

6. view the Memcached status

Printf "stats \ r \ n" | nc 127.0.0.1 200001

STAT pid 3025

Statuptime 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

Stattotal_connections 547850

STAT connection_structures 1189

STAT performance_get 13619685

STAT performance_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. Run the top command to check the Memcached status:

Printf "stats \ r \ n" | nc 127.0.0.1 200001

Or

Watch "echo stats | nc 127.0.0.1 200001"