Support Lambda durable execution

[jeastham1993]

It would be great to add support for the newly announced durable executions for Lambda. I realize it's a brand new feature, but wanted to open an issue to track it :)

https://aws.amazon.com/blogs/aws/build-multi-step-applications-and-ai-workflows-with-aws-lambda-durable-functions/

[alessandrobologna]

Hi all, I put together a small, experimental Rust SDK for Durable Execution.. This is not official at all and not meant to replace whatever the Lambda team will ship. It was mainly a learning project for me to understand the inner workings of durable execution, using the official TypeScript and Python SDKs as references.

The way it is right now, it supports (I think!) the same primitives as the official SDKs (steps, sleep/wait, callbacks, parallel/map, etc.). Caveat emptor: large parts of the code were drafted with AI help and it has only been exercised in my own workloads so far.
I have used it to implement something similar to lambda power tuning orchestration (the initial goal to port to rust was actually to see if it would reduce the execution overhead).

Important

If you are looking for production‑ready support, it probably makes sense to wait for an official AWS SDK. However, if you want to experiment with these patterns in Rust today, this might be useful. I (intentionally) haven't yet published the crate to crates.io, so if you want to try it you will need to add it to your dependencies:

[dependencies]
lambda-durable-execution-rust = { git = "https://github.com/alessandrobologna/lambda-durable-execution-rust.git" }

Also, if the AWS team has not started on a Rust SDK yet and would find this helpful, at least as starting point, I would be happy to transfer/donate the repo.

Links:

• sdk: https://github.com/alessandrobologna/lambda-durable-execution-rust
• benchmark/demo: https://github.com/alessandrobologna/lambda-durable-benchmark