Are You .ready?

A practical guide to what .ready and .done mean, and why WAL sticks around Introduction It is 9:12 a.m. on a Monday. Someone on your team opens pg_wal/archive_status/ during a storage scare and sees a long list of files ending in .ready . They ask the question many of us have asked at least once: “Is replication broken?” Streaming replicas still look mostly fine, but .ready files keep piling up,…