FA-29615 / HTTP retries / Member archive

Retry reconciliation with a server receipt: Late duplicate commits overwrite the first durable result · case 05

Late duplicate commits overwrite the first durable result

Member previewVariant 5 · 3 implementations · 6 checks per implementation

Case contract

submit(key,body) returns new for absent key, pending for matching in-flight key, conflict for a changed body, and cached(value) for a completed matching key. commit(key,value) commits only existing pending entries. forget removes a receipt. Return decisions and receipt table.

Why this case matters

Offline deterministic model of HTTP request retries.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
3	`[["new", ["cached", 99], "conflict"], {"a": [5, "done", 99]}]`	`[["new", ["cached", 10], "conflict"], {"a": [5, "done", 10]}]`	Failed

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