ContextStream Receipt ID CSR-7F3A91

Session Receipt

Project: streampilot-demo-app

Agent: Claude Code
Date: July 13, 2026
Duration: 42 min
Session: #118 on main

Summary

Fixed the retry loop in the upload worker and locked in the backoff strategy.

Decisions made

2 recorded

Cap upload retries at five attempts.

Keeps failed jobs from cycling forever while still recovering from short outages — five attempts covers every transient failure we saw in the logs.

Saved to project memory

Use exponential backoff with jitter, capped at 30 seconds.

Spreads retry traffic so a recovering upload service isn’t hit by a synchronized burst from every waiting client at once.

Saved to project memory

What changed

4 files

src/workers/upload-worker.ts L48–112

Replaced the unbounded retry loop with an explicit five-attempt limit.
src/lib/retry-policy.ts L1–67 new

Backoff policy in one place: exponential delay with randomized jitter, capped at 30 s.
tests/upload-worker.test.ts L22–146

Added coverage for temporary failures, five-attempt exhaustion, and jitter bounds.
docs/upload-reliability.md L14–38

Wrote down the agreed retry behavior so the next session starts from it.

Proof

full suite

34 passed 0 failed · 4.2 s

npm test exit 0

$ npx vitest run

PASS tests/upload-worker.test.ts
  ✓ retries temporary upload failures
  ✓ stops after five attempts
  ✓ applies bounded jitter
  … 31 more passing tests

Tests     34 passed, 0 failed
Duration  4.2s

View full session transcript

Lesson captured

1 saved

Upload retries must always have a terminal condition — including when the upstream service returns an ambiguous timeout.

WarningThis lesson will auto-surface next time this code is touched.

Open items

carried to next session

Add retry-attempt telemetry to the operations dashboard so exhaustion shows up before users report it.
Confirm production timeout thresholds with the infrastructure team.