Adrian D.

docs: Add DELETE example for Route53 ChangeResourceRecordSets

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This commit adds a DELETE operation example to the Route53 ChangeResourceRecordSets documentation to address issue #4519. Fixes #4519

Add SigV4 note to generate_presigned_post documentation

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## Issue https://github.com/boto/boto3/issues/4351 Title: (short issue description)generate_presigned_post documentation should provide a link to S3 doc explaining regional default variation in response #4351 ## Summary This PR adds a documentation note...

[Documentation] Warning against the use of S3 Global Endpoint (s3.amazonaws.com) as endpoint-url

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## Summary Adds documentation improvements to [S3 configuration documentation](https://docs.aws.amazon.com/cli/latest/topic/s3-config.html) (in the AWS CLI) for the --endpoint-url parameter: 1. Warning against S3 Global endpoint: Advises users to avoid using `https://s3.amazonaws.com` or...

Related to PR in Botocore: https://github.com/boto/botocore/pull/3579 Testing:

The same as: https://github.com/boto/botocore/pull/3565 but this is for Boto3

TCP Keep-Alive Environment Variable Support

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Currently, TCP Keep-Alive can be configured using `Config` object and `~/.aws/config` file as per [Configuration Doc](https://boto3.amazonaws.com/v1/documentation/api/latest/guide/configuration.html). This PR adds environment variable support via `BOTOCORE_TCP_KEEPALIVE`. Example Usage: export BOTOCORE_TCP_KEEPALIVE=True or true...

Use generic error handling for 4XX empty responses

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### Problem When AWS services return 4XX errors with empty bodies, users receive XML parsing errors instead of meaningful HTTP status messages. For example, service returns HTTP 413 with an...

Support null values in parsers when services accepts and returns null values.

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This PR addresses parsing where the `_handle_integer` method returns with a TypeError when a service (e.g. RDS Data API) supports and returns `null` or `None` values. The root cause lies...