ISTM it should be possible to avoid sending full page writes to a streaming replica once the replica has reached a consistent state. I assume that the replica would still need to write full pages to it's disk in case of a crash, but the sender could insert special WAL records to tell it when to do so, instead of sending the full page image. Presumably this would be a big win for replication over a WAN.

Am I missing something? I see that pglesslog is no longer supported but couldn't find any particular reason for that...
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble!

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