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maxday merged 1 commit into from
Oct 7, 2026
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feat: bump to 4.2.0 #229

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4 changes: 4 additions & 0 deletions RELEASE.CHANGELOG.md
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### October 7, 2026
`4.2.0`
- Add a `w3c()` helper to `LambdaContext` that returns the W3C trace-context fields (`traceparent`, `tracestate`, `baggage`) carried on `clientContext.w3c` at invoke time ([#228](https://github.com/aws/aws-lambda-python-runtime-interface-client/pull/228))

### September 24, 2026
`4.1.0`
- Add pre-fork hooks for multi-concurrent (Lambda Managed Instances) mode. A function can register callables with the `@register_pre_fork` decorator from `awslambdaric.lambda_concurrency_hooks`; they run once in the parent process, after the handler is imported and before worker processes are started. Workers re-import the handler in their own process, so hooks are for external side effects (starting a subprocess, warming a local service, writing to `/tmp`) and share no in-memory state with workers. A hook that raises is reported to the Runtime API as an INIT error with the type `Runtime.PreForkError` and no worker is started. No impact on the standard on-demand path.
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2 changes: 1 addition & 1 deletion awslambdaric/__init__.py
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Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
"""

__version__ = "4.1.0"
__version__ = "4.2.0"
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