- Out-of-order responses. A then B for the same key; A resolves last. Show A's data winning.
Fix with a dispatch-time sequence number.
- Prove timestamps insufficient. Construct the four-timestamp case and explain why arrival,
client clock, and server time all fail.
- Dedup + cancellation. Three subscribers share one request; one unsubscribes. Does the request
abort? Decide, and justify.
- Refetch storm. Window focus triggers 50 simultaneous refetches. Measure; then bound it.
- GC race. An entry collected while a component is mid-mount.
- Cross-tab. Two tabs, same key, one mutates.