recovery_prefetch

A configuration parameter which enables WAL prefetching
This entry relates to a PostgreSQL feature which is part of PostgreSQL 15, due to be released in late 2022.

recovery_prefetch is a configuration parameter which determines whether to enable WAL prefetching on a standby.

recovery_prefetch was added in PostgreSQL 15.

Default

The default value for recovery_prefetch is: try.

Note the default value may be changed before the PostgreSQL 15 release.

Change history

Note that recovery_prefetch was originally added in PostgreSQL 14 (commit 1d257577) but subsequently withdrawn (commit c2dc1934).

Categories

GUC configuration item, Replication, WAL

See also

wal_decode_buffer_size, pg_stat_recovery_prefetch