SLOWLOG LEN
Syntax
        SLOWLOG LEN
- Available since:
 - 2.2.12
 - Time complexity:
 - O(1)
 - ACL categories:
 - 
              
                
@admin,@slow,@dangerous, 
This command returns the current number of entries in the slow log.
A new entry is added to the slow log whenever a command exceeds the execution time threshold defined by the slowlog-log-slower-than configuration directive.
The maximum number of entries in the slow log is governed by the slowlog-max-len configuration directive.
Once the slog log reaches its maximal size, the oldest entry is removed whenever a new entry is created.
The slow log can be cleared with the SLOWLOG RESET command.