Retry without idempotency key
Review this Go helper that retries a transfer when the call returns any error, including timeouts.
What a strong answer looks like
Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.
0:00 of about 18 min
Mark a line and say what kind of problem it is.0 findings
1func transfer(ctx context.Context, req TransferReq) error {
2 var err error
3 for i := 0; i < 3; i++ {
4 err = bank.Transfer(ctx, req) // POST, no idempotency key
5 if err == nil {
6 return nil
7 }
8 }
9 return err
10}
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.