AWS Lambda: Add support for Lambda Durable Functions #137
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Add Lambda Durable Functions support with: - durableConfig property in serverless.yml (executionTimeout, retentionPeriodInDays) - Auto-enable versioning when durableConfig is present (required for qualified ARNs) - CloudFormation DurableConfig property generation - Deploy function support for durable configuration Durable functions enable long-running workflows that can span multiple Lambda invocations with automatic state management and checkpointing.
Automatically attach AWSLambdaBasicDurableExecutionRolePolicy managed policy to Lambda execution roles when durableConfig is present. This grants the necessary permissions for durable function operations including checkpoint management and execution state access.
Add --durable-execution-name option to serverless invoke command: - Enables idempotent invocations with unique execution names - Supports both synchronous and asynchronous durable invocations - Execution names must be 1-64 chars (alphanumeric, hyphens, underscores) - Repeated invocations with same name return cached results Usage: serverless invoke -f myFunc --durable-execution-name order-12345
Document durable functions feature including: - Configuration properties (executionTimeout, retentionPeriodInDays) - Supported runtimes (Node.js 22+, Python 3.13+) - IAM permissions and managed policy - Invoke command --durable-execution-name option - Usage examples and limitations
mnapoli
reviewed
Jan 22, 2026
Contributor
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This looks very clean, I added a minor comment but honestly the rest looks good to me 👍 |
Move durable execution example to a more appropriate location in the invoke.md documentation and update example to include contextPath parameter.
Author
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@mnapoli moved that section below local invocation examples and used similar arguments for clarity |
mnapoli
reviewed
Jan 22, 2026
| This example invokes a durable function with a unique execution name. If you invoke the same function with the same execution name again, Lambda returns the cached result from the previous execution instead of re-executing the function. This enables idempotent invocations for reliable workflow orchestration. | ||
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| **Note:** Durable execution names must be 1-64 characters and contain only alphanumeric characters, hyphens, or underscores. See the [Functions guide](../guides/functions.md#aws-lambda-durable-functions) for more information on configuring durable functions. | ||
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Contributor
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😅 sorry that's still not good, now the new section is right in the middle of the "invoke locally" documentation:
Can you move it up after the #### Example data.json`` section and before the documentation about local invokes?
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On December 2nd, 2025, AWS introduced Durable Lambda Executions, enabling long-running, fault-tolerant workflows without custom chaining, self-invocation, or continuation persistence (announcement).
This PR adds support for Lambda Durable Functions :
Features:
durableConfigproperty withexecutionTimeout(1-31536000 seconds) andretentionPeriodInDays(1-90 days)durableConfigis present (required for qualified ARNs)AWSLambdaBasicDurableExecutionRolePolicy)--durable-execution-nameoption for idempotent invocationsUsage: