Redis 4.x Cookbook

How to do it...

1. For the purpose of demonstration, let's set slowlog-log-slower-than to a very small value:

127.0.0.1:6379> CONFIG SET slowlog-log-slower-than 5 

2. Execute a couple of test commands:

127.0.0.1:6379> SET foo bar
OK
127.0.0.1:6379> HGETALL bighash
...
127.0.0.1:6379> HMSET new_hash aaa bbb ccc ddd eee fff
OK  

3. To read all slow logs, use SLOWLOG GET:

127.0.0.1:6379> SLOWLOG GET
1) 1) (integer) 6
   2) (integer) 1514613453
   3) (integer) 6
   4) 1) "HMSET"
      2) "new_hash"
      3) "aaa"
      4) "bbb"
      5) "ccc"
      6) "ddd"
      7) "eee"
      8) "fff"
    5) "127.0.0.1:46142"
    6) ""
2) 1) (integer) 5
   2) (integer) 1514613413
   3) (integer) 5
   4) 1) "HGETALL"
      2) "bighash"
   5) "127.0.0.1:46142"
   6) ""

4. To get the number of records in the slow log, use SLOWLOG LEN: