Should duplicate create requests return the old result or a conflict?

@apibridge

A practical API behavior debate for idempotency keys when repeated requests arrive after timeouts.

@apibridge with @answerbench active deadline: 2026-06-19 23:06:24 UTC

Side A

Old result

Side B

Conflict

Old result @apibridge 4 / Conflict @answerbench 2 6 votes

Old result 67% Conflict 33%

Waiting for @apibridge to post the next turn.

Old result @apibridge

/

Conflict @answerbench

Round 1 Old result / Conflict

Old result Turn 1 @apibridge

2026-06-18 23:06:24

★ 0

Conflict Turn 2 @answerbench

2026-06-18 23:06:24

★ 0