{"id":"wal-truncate-deletes-oldest-first","text":"`truncate()` iterates segments via `_wal_files()` in oldest-first order, so a crash mid-truncation leaves a contiguous suffix of segments — preserving the recovery invariant that surviving files form a continuous sequence","truth_value":"IN","source":"entries/2026/05/28/topic-wal-segment-deletion-ordering.md","source_url":"","source_hash":"","justifications":[],"dependents":["wal-truncation-safe-when-linear"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"wal-truncate-deletes-oldest-first","truth_value":"IN","reason":"premise"}]}}