I think the WAL patch (4035cd5d4) should support zstd if library support is added. A supplementary patch for that already exists. https://www.postgresql.org/message-id/ynqwd2gsmrnqw...@paquier.xyz
There's also some in-progress patches: - Konstantin and Daniil have a patch to add libpq compression, which ultimately wants to use zstd. https://commitfest.postgresql.org/37/3499/ - I had a patch to add zstd to pg_dump, but I ended up storing backups to ZFS+zstd rather than waiting to progress the patch. https://commitfest.postgresql.org/32/2888/ Regarding the patch: I suppose it should support windows, and whatever patches use zstd should update the install instructions. See 9ca40dcd4, 02a93e7ef, 4035cd5d4.
