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Default value
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wal_compression

A server parameter determining whether WAL should be compressed

wal_compression is a configuration parameter determining whether full page images should be compressed.

wal_compression was added in PostgreSQL 9.5.

Default value

The default value for wal_compression is: off.

Change history

PostgreSQL 15
- option lz4 added (commit 4035cd5d)
- option zstd added (commit e9537321)
PostgreSQL 9.5
- added (commit 57aa5b2b)

References

PostgreSQL documentation: wal_compression

Useful links

About wal_compression on PostgreSQL - May 2019 blog article by Fabio Pardi / Portavita
PostgreSQL underused features – WAL compression - June 2016 blog article by Kaarel Moppel / Cybertec

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See also

wal_log_hints, wal_recycle