Celery - v5.4.0-rc1

Celery v5.4 continues our effort to provide improved stability in production environments.
The release candidate version is available for testing.
The official release is planned for March-April 2024.

Please share feedback in the discussion below.

What's Changed

• New Config: worker_enable_prefetch_count_reduction by @Nusnus in https://github.com/celery/celery/pull/8581
• Added "Serverless" section to Redis doc (redis.rst) by @Nusnus in https://github.com/celery/celery/pull/8640
• Upstash's Celery example repo link fix due to deprecation of the prev… by @Nusnus in https://github.com/celery/celery/pull/8665
• Update mypy version by @auvipy in https://github.com/celery/celery/pull/8679
• Update cryptography dependency to 41.0.7 by @danyi1212 in https://github.com/celery/celery/pull/8690
• Add type annotations to celery/utils/nodenames.py by @lyzlisa in https://github.com/celery/celery/pull/8667
• Issue 3426. Adding myself to the contributors. by @Mulugruntz in https://github.com/celery/celery/pull/8696
• Bump actions/setup-python from 4 to 5 by @dependabot in https://github.com/celery/celery/pull/8701
• Fixed bug where chord.link_error() throws an exception on a dict type errback object by @Nusnus in https://github.com/celery/celery/pull/8702
• Bump github/codeql-action from 2 to 3 by @dependabot in https://github.com/celery/celery/pull/8725
• Fixed multiprocessing integration tests not running on Mac by @Nusnus in https://github.com/celery/celery/pull/8727
• Added make docker-docs by @Nusnus in https://github.com/celery/celery/pull/8729
• Fix DeprecationWarning: datetime.datetime.utcnow() by @cclauss in https://github.com/celery/celery/pull/8726
• Remove new adjective in docs by @Viicos in https://github.com/celery/celery/pull/8743
• add type annotation to celery/utils/sysinfo.py by @em1le in https://github.com/celery/celery/pull/8747
• add type annotation to celery/utils/iso8601.py by @em1le in https://github.com/celery/celery/pull/8750
• Change type annotation to celery/utils/iso8601.py by @em1le in https://github.com/celery/celery/pull/8752
• Update test deps by @auvipy in https://github.com/celery/celery/pull/8754
• Mark flaky: test_asyncresult_get_cancels_subscription() by @Nusnus in https://github.com/celery/celery/pull/8757
• change _read_as_base64 (b64encode returns bytes) on celery/utils/term.py by @em1le in https://github.com/celery/celery/pull/8759
• Replace string concatenation with fstring on celery/utils/term.py by @em1le in https://github.com/celery/celery/pull/8760
• Add type annotation to celery/utils/term.py by @em1le in https://github.com/celery/celery/pull/8755
• Skipping test_tasks::test_task_accepted by @Nusnus in https://github.com/celery/celery/pull/8761
• Updated concurrency docs page. by @robotrapta in https://github.com/celery/celery/pull/8753
• Changed pyup -> dependabot for updating dependencies by @Nusnus in https://github.com/celery/celery/pull/8764
• Bump isort from 5.12.0 to 5.13.2 by @dependabot in https://github.com/celery/celery/pull/8772
• Update elasticsearch requirement from <=8.11.0 to <=8.11.1 by @dependabot in https://github.com/celery/celery/pull/8775
• Bump sphinx-click from 4.4.0 to 5.1.0 by @dependabot in https://github.com/celery/celery/pull/8774
• Bump python-memcached from 1.59 to 1.61 by @dependabot in https://github.com/celery/celery/pull/8776
• Update elastic-transport requirement from <=8.10.0 to <=8.11.0 by @dependabot in https://github.com/celery/celery/pull/8780
• python-memcached==1.61 -> python-memcached>=1.61 by @Nusnus in https://github.com/celery/celery/pull/8787
• Remove usage of utcnow by @amweiss in https://github.com/celery/celery/pull/8791
• Smoke Tests by @Nusnus in https://github.com/celery/celery/pull/8793
• Moved smoke tests to their own workflow by @Nusnus in https://github.com/celery/celery/pull/8797
• Bugfix: Worker not consuming tasks after Redis broker restart by @Nusnus in https://github.com/celery/celery/pull/8796
• Bugfix: Missing id on chain by @Nusnus in https://github.com/celery/celery/pull/8798
• Prepare for (pre) release: v5.4.0rc1 by @Nusnus in https://github.com/celery/celery/pull/8800

New Contributors

• @danyi1212 made their first contribution in https://github.com/celery/celery/pull/8690
• @Mulugruntz made their first contribution in https://github.com/celery/celery/pull/8696
• @Viicos made their first contribution in https://github.com/celery/celery/pull/8743
• @em1le made their first contribution in https://github.com/celery/celery/pull/8747
• @robotrapta made their first contribution in https://github.com/celery/celery/pull/8753
• @amweiss made their first contribution in https://github.com/celery/celery/pull/8791

Full Changelog: https://github.com/celery/celery/compare/v5.3.6...v5.4.0rc1