{"id":"range-scan-last-writer-wins","text":"`range_scan` iterates sources oldest-to-newest (SSTables, then immutable memtables, then active memtable) so that dict overwrites naturally give each key the value from the newest source","truth_value":"IN","source":"entries/2026/05/28/log-structured-merge-tree-lsm-range_scan.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"range-scan-last-writer-wins","truth_value":"IN","reason":"premise"}]}}