fate 2.2.1 ships massive perf gains: up to 343x faster record deletion
cnakazawa · x · 2026-11-15
The open-source data sync framework fate released v2.2.1 with sweeping performance improvements, shared by author cnakazawa with the quip "You can just make everything faster":
- Optimistic update response processing: 1,000 records with 50 optimistic edits went from 67.2ms to 1.1ms (63x faster)
- Restoring 1,000 cached records from IndexedDB: roughly 4.5–5x faster
- Cache-hit flush for 1,000 records: 297.5ms → 2.3ms (129x faster)
- Cross-tab client-state updates made incremental: 19.4ms → 0.4ms (49x faster)
- Batched relationship cleanup: deleting 3,000 related records went from 969ms to 2.8ms (343x faster)
- Shared request dependency tracking: unselected-field updates with ten observers over 10,000 records dropped from 87.8ms to 3.2ms (28x faster)
Other changes include reusing unchanged subtrees and memo dependencies, and skipping garbage collection when nothing has changed.
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