Queue-Backed Email API

Project roadmap

1. 01

   Design the architecture

   ~1.5h

   Define components, data contracts, persistence boundaries, invariants, failure modes, and concurrency needs for Queue-Backed Email API.

2. 02

   Implement the critical path

   ~2.5h

   Build the primary Queue-Backed Email API workflow with explicit invariants, validation, and controlled state transitions.

3. 03

   Add durability and recovery

   ~2h

   Implement durable state, checkpoints, retries, or recovery behavior appropriate to Queue-Backed Email API's failure model.

4. 04

   Control concurrency and limits

   ~2h

   Add ordering, backpressure, rate limits, bounded concurrency, or conflict handling required by Queue-Backed Email API.

5. 05

   Add observability and tests

   ~2h

   Add structured diagnostics and test normal operation, failures, restart behavior, and important invariants for Queue-Backed Email API.

Resources

• DocsMDN JavaScript Guide