Which of these can be considered to monitor replication delay ? Redis_master_repl_offset, Redis_master_last_io_seconds_ago , Redis_slave_repl_offset
Given results from an
INFO replication command like this:
You can tell that
slave0 is behind master by 6. This is the difference between the
master_repl_offset and the offset value in the
slave0 line, which is the last number in it. If you have multiple slaves, each will get their own line with their own offset value.