{"id":"lsm-wal-entry-size","text":"Each LSM WAL entry is exactly `8 + len(key_utf8) + len(value)` bytes: two 4-byte big-endian length headers plus the raw payloads, with no checksum or operation-type field","truth_value":"IN","source":"entries/2026/05/29/topic-write-amplification-measurement.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"lsm-wal-entry-size","truth_value":"IN","reason":"premise"}]}}