The presentation will take place in Ballroom G on Friday, March 6, 2026 - 12:30 to 13:30
The Postgres write-ahead log, or WAL, is basically a change-log for the database. It enables several important Postgres features: crash recovery, point-in-time recovery, and binary and logical replication. This talk explains what is stored in the WAL, how binary and logical replication work, and how replication slots track replication progress.
