implement-stateless-idempotency

What problem does it solve?

This skill helps engineers implement stateless services and idempotent operations to ensure horizontal scalability, safe retries, and consistent results in distributed systems.

Core Features & Use Cases

• Idempotent middleware: Wrap handlers to detect and prevent duplicate work.
• Idempotency storage patterns: Learn to store and manage IdempotencyRecords with TTLs.
• Upsert and conditional writes: Use upsert semantics and conditional writes to handle concurrency.
• Event deduplication: Implement dedup logic for event and message processing.
• Use Case: Protect critical operations like order placement or payment retries from duplicates.

Quick Start

Configure your service to include an IdempotentHandler around your request handlers and wire a backing IdempotencyStore; provide a key function to derive the idempotency key from requests; and implement the Complete/Fail paths as described in the guide.