{"id":"wal-sync-mode-default-is-sync","text":"`WriteAheadLog` defaults to `sync_mode=\"sync\"`, calling `flush()` + `os.fsync()` after every single `append` call — the safest and slowest mode.","truth_value":"IN","source":"entries/2026/05/29/topic-wal-sync-modes.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"wal-sync-mode-default-is-sync","truth_value":"IN","reason":"premise"}]}}