New Serverless pattern - lambda-durable-function-chaining-sam #2928
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bfreiberg
requested changes
Feb 7, 2026
| FunctionName: durable-orchestrator | ||
| CodeUri: src/orchestrator/ | ||
| Handler: app.lambda_handler | ||
| Timeout: 900 |
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Is such a high timeout necessary?
Co-authored-by: Ben <9841563+bfreiberg@users.noreply.github.com>
bfreiberg
requested changes
Feb 9, 2026
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bfreiberg
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bfreiberg
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Thank you, one more round and I think we are good to go
Co-authored-by: Ben <9841563+bfreiberg@users.noreply.github.com>
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Issue #, if available:
#2929
Description of changes:
This pattern demonstrates the function chaining workflow pattern using AWS Lambda durable functions. A durable orchestrator function sequentially invokes three Lambda functions using context.invoke(), where each invocation automatically creates a checkpoint. The key benefit is fault tolerance: if the orchestrator fails mid-execution, it replays from the beginning but skips completed steps by loading results from checkpoints, ensuring no work is re-executed. This
pattern showcases how developers can build resilient, multi-step workflows directly in Python code without managing external state infrastructure, leveraging the new Lambda durable functions capability and the aws-durable-execution-sdk-python SDK. This also leverages SAM for the deployment of the durable function.