14.9.4.1 Binlog Event header

The binlog event header starts each event and is either 13 or 19 bytes long, depending on the binlog version.

Binlog::EventHeader:

Binlog header

Payload

4              timestamp
1              event type
4              server-id
4              event-size
   if binlog-version > 1:
4              log pos
2              flags

Fields

• timestamp (4) -- seconds since unix epoch

• event_type (1) -- see Binlog Event Type

• server_id (4) -- server-id of the originating mysql-server. Used to filter out events in circular replication.

• event_size (4) -- size of the event (header, post-header, body)

• log_pos (4) -- position of the next event

• flags (2) -- see Binlog Event Flag