All Your GUCs in a Row: fsync

A deep dive into PostgreSQL's fsync configuration parameter, explaining why turning it off risks unrecoverable data corruption rather than just performance degradation. Covers the difference between fsync and synchronous_commit, the only legitimate use cases for disabling fsync (throwaway databases, CI environments, bulk loads), the hidden danger of re-enabling it without a proper sync step, and safer alternatives like pg_test_fsync and synchronous_commit=off for performance gains without data integrity risk.

Source: https://postgr.es/p/9qo. 8sync News only summarizes and links out; content copyright belongs to the authors and original sources.