aws-lambda-durable-functions

To build long-running AWS Lambda workflows that survive failures, wrap your handler with the withDurableExecution utility to automatically checkpoint state and replay execution deterministically across invocations.

Durable Lambda workflows are serverless orchestration patterns that persist state and replay deterministically across invocations. You need them for multi-step data pipelines, automation tasks, and human-in-the-loop callbacks.

You add human-in-the-loop callbacks and waits to serverless workflows by defining explicit callback patterns and wait steps within your durable execution handler, allowing workflows to pause and resume automatically.

Yes, you can test durable Lambda workflows locally before cloud deployment using the LocalDurableTestRunner tooling, which validates stateful orchestration and deterministic replay rules in a local environment.

The main limitation of deterministic replay for serverless orchestration is that strict replay rules must be followed to ensure state consistency, meaning non-deterministic operations must be carefully isolated outside the checkpointed workflow steps.