Code RoomRetry wrapper with exponential backoff
HardPrep Room Coding #4353

Retry wrapper with exponential backoff

Vibe & agenticNetworking & APIsSenior–Staff~22 min

You're writing a generic retry wrapper in Go for outbound HTTP calls to a payment provider. You want an AI agent to produce `func WithRetry(ctx, op, policy)` with exponential backoff and jitter. Write the prompt/spec — constraints, edge cases, acceptance criteria — so the agent gets it right first try, given money is involved. Explain what a naive prompt ("retry the request a few times with backoff") gets dangerously wrong here.

Implement
plan_retry_sleeps(outcomes: list[str], base_ms: int, cap_ms: int, max_attempts: int, max_elapsed_ms: int) → list[int]
Examples
in[["503","503","200"],100,1000,5,10000]out[100,200]
in[["400"],100,1000,5,10000]out[]
What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it (tests, edge cases, reading critically), and how you’d re-prompt or decompose to get it right.

0:00 of about 22 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.