Shulou(Shulou.com)06/01 Report--

The format is messy, mainly to record some usual operations and learning process.

1, check the quantity

127.0.0.1 purl 6379 > dbsize

(integer) 6

2. Rewrite the aof file manually

127.0.0.1 purl 6379 > bgrewriteaof

Background append only file rewriting started

3. Save the aof log. This command will block other operations. It is recommended to use bgsave.

127.0.0.1 purl 6379 > save

OK

4, check the time of the last save

127.0.0.1 purl 6379 > lastsave

(integer) 1561370112

5. Save in the background

127.0.0.1 purl 6379 > bgsave

Background saving started

127.0.0.1 purl 6379 > lastsave

(integer) 1561370140

6Jing flushdb cleans the current connection db

Flushall cleans up all db

7 the Memory info command displays detailed information, such as information about

Space of used_memory:1928448 data structure

Used_memory_rss:8679424 real space

The proportion of the top two of mem_fragmentation_ratio:4.50, 1.n is the best. If this value is particularly large, it means that redis memory is seriously fragmented and can be exported and imported again.

Role:master

Connected_slaves:2

Slave0:ip=127.0.0.1,port=6380,state=online,offset=567100,lag=0

Slave1:ip=127.0.0.1,port=6381,state=online,offset=567100,lag=0

Stats-fork information

The last time latest_fork_usec:2506 exported a rdb snapshot, it took microseconds to persist. Note that if an instance has 10G content, it takes 2 minutes to export and write 10000 times per minute, resulting in continuous rdb exports and the disk is always in a high IO state.

8, slow log slowlog

1, how long is slow?

Specified by slowlog-log-slower-than 10000, in microseconds

Setting method:

127.0.0.1 purl 6379 > config get slowlog-log-slower-than

1) "slowlog-log-slower-than"

2) "10000"

127.0.0.1 config set slowlog-log-slower-than 6379 >

OK

127.0.0.1 purl 6379 > config get slowlog-log-slower-than

1) "slowlog-log-slower-than"

2) "100"

2, how many slow logs are stored by the server

Slowlog-max-len 128to limit it.

3. View slow logs

127.0.0.1 purl 6379 > slowlog get

1) 1) (integer) 2

2) (integer) 1561442704

3) (integer) 131

4) 1) "keys"

2) "*"

2) 1) (integer) 1

2) (integer) 1561442666

3) (integer) 105

4) 1) "config"

2) "get"

3) "slowlog-log-slower-than"

3) 1) (integer) 0

2) (integer) 1561370112

3) (integer) 20647

4) 1) "save"

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