Comparison guide
Idempotency vs. retry policy vs. transaction boundary: what should you ask AI for?
Retries are useful only when repeating the action is safe. If a submit, payment, job, webhook, or API call can create duplicate side effects, you need idempotency before you need more retries.
Fast answer
Idempotency
Use Idempotency when the same request might happen twice and must still produce one intended result.
Retry policy
Use Retry policy when transient failures should be attempted again with limits, backoff, and stop conditions.
Timeout budget
Use Timeout budget when the product needs a clear point where waiting becomes failure.
Transaction boundary
Use Transaction boundary when you must separate draft edits from committed side effects.
Recovery path
Use Recovery path when the user needs to know what happened and how to continue after uncertainty.
What to ask AI
Weak ask
Retry failed submissions so users do not get errors.
Exact Terms ask
Design this submit flow with idempotency keys, retry policy, timeout budget, transaction boundary, duplicate-response handling, and recovery paths for uncertain outcomes.
Common trap
More retries
More retries can make duplicate records, charges, emails, or jobs worse if the operation is not idempotent.
Only disabling the button
Disabling the button helps the interface, but the server-side side effect still needs idempotency.
No recovery language
After timeout, the product must tell users whether to retry, wait, check status, or contact support.
Related guides
Idempotency prompt for preventing duplicate submissions.
A copyable idempotency prompt for preventing duplicate submissions, double clicks, retry side effects, repeated API calls, and duplicate records.
AI coding agent vocabulary for robust app workflows.
AI coding agent vocabulary for fixing vibe-coded apps: statecharts, step state, transition tables, guard conditions, draft persistence, idempotency, checkpoints, fallback UI, and recovery paths.
Recovery path prompts for failed API flows.
Copyable recovery path prompts for failed API flows, partial success, retries, fallback UI, timeout budgets, and user-safe continuation.
State machine terms for multi-step forms and builders.
State machine and workflow reliability terms for multi-step forms: statecharts, transition tables, guard conditions, resumability, idempotency, and recovery paths.
Common questions
Which comes first, retry policy or idempotency?
For side effects, idempotency comes first. Once repeating is safe, a retry policy can define when and how to try again.
Does idempotency mean no errors?
No. It means repeated attempts are safe. You still need timeout budgets, visible states, and recovery paths.