138 lines
5.7 KiB
Plaintext
138 lines
5.7 KiB
Plaintext
Metadata-Version: 2.4
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Name: stamina
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Version: 25.1.0
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Summary: Production-grade retries made easy.
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Project-URL: Documentation, https://stamina.hynek.me/
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Project-URL: GitHub, https://github.com/hynek/stamina
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Project-URL: Changelog, https://github.com/hynek/stamina/blob/main/CHANGELOG.md
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Project-URL: Funding, https://github.com/sponsors/hynek
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Project-URL: Mastodon, https://mastodon.social/@hynek
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Project-URL: Bluesky, https://bsky.app/profile/hynek.me
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Project-URL: Twitter, https://twitter.com/hynek
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Author-email: Hynek Schlawack <hs@ox.cx>
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License-Expression: MIT
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License-File: LICENSE
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Keywords: reliability,retries,retry
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Framework :: AsyncIO
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Classifier: Framework :: Trio
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Classifier: License :: OSI Approved :: MIT License
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Classifier: Programming Language :: Python :: 3.8
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Classifier: Programming Language :: Python :: 3.9
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Classifier: Programming Language :: Python :: 3.10
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Classifier: Programming Language :: Python :: 3.11
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Classifier: Programming Language :: Python :: 3.12
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Classifier: Programming Language :: Python :: 3.13
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Classifier: Typing :: Typed
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Requires-Python: >=3.8
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Requires-Dist: tenacity
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Requires-Dist: typing-extensions; python_version < '3.10'
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Provides-Extra: dev
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Requires-Dist: anyio; extra == 'dev'
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Requires-Dist: dirty-equals; extra == 'dev'
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Requires-Dist: mypy>=1.4; extra == 'dev'
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Requires-Dist: nox>=2024.3.2; extra == 'dev'
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Requires-Dist: prometheus-client; extra == 'dev'
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Requires-Dist: pytest; extra == 'dev'
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Requires-Dist: structlog; extra == 'dev'
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Requires-Dist: trio; extra == 'dev'
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Provides-Extra: docs
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Requires-Dist: prometheus-client; extra == 'docs'
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Requires-Dist: sphinx>=7.2.2; extra == 'docs'
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Requires-Dist: structlog; extra == 'docs'
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Provides-Extra: tests
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Requires-Dist: anyio; extra == 'tests'
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Requires-Dist: dirty-equals; extra == 'tests'
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Requires-Dist: pytest; extra == 'tests'
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Provides-Extra: typing
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Requires-Dist: mypy>=1.4; extra == 'typing'
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Description-Content-Type: text/markdown
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# *stamina*: Production-grade Retries Made Easy
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Transient failures are common in distributed systems.
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To make your systems resilient, you need to **retry** failed operations.
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But bad retries can make things *much worse*.
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*stamina* is an opinionated wrapper around the great-but-unopinionated [Tenacity](https://tenacity.readthedocs.io/) package.
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Our goal is to be as **ergonomic** as possible, while doing the **right thing by default**, and minimizing the potential for **misuse**.
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It is the result of years of copy-pasting the same configuration over and over again:
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- Retry only on certain exceptions – or even a subset of them by introspecting them first using a predicate.
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- Exponential **backoff** with **jitter** between retries.
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- Limit the number of retries **and** total time.
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- Automatic **async** support – including [Trio](https://trio.readthedocs.io/).
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- Preserve **type hints** of the decorated callable.
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- Flexible **instrumentation** with [Prometheus](https://github.com/prometheus/client_python), [*structlog*](https://www.structlog.org/), and standard library's `logging` support out-of-the-box.
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- Dedicated support for **testing** that allows to _globally_ deactivate retries, or to limit the number of retries and to remove backoffs.
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For example:
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```python
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import httpx
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import stamina
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@stamina.retry(on=httpx.HTTPError, attempts=3)
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def do_it(code: int) -> httpx.Response:
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resp = httpx.get(f"https://httpbin.org/status/{code}")
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resp.raise_for_status()
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return resp
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```
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<!-- end docs index -->
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**Async** callables work use the same API and it's possible to retry **arbitrary blocks**, too.
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Check out our [tutorial](https://stamina.hynek.me/en/latest/tutorial.html) for more examples!
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Or, if you prefer video, here's a brief introduction into retries and *stamina*:
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[](https://youtu.be/BxikFuvaT1Y)
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## Release Information
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### Added
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- *cap* argument to `stamina.set_testing()`.
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By default, the value passed as *attempts* is used strictly.
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When `cap=True`, it is used as an upper cap; that means that if the original attempts number is lower, it's not changed.
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[#80](https://github.com/hynek/stamina/pull/80)
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- `stamina.set_testing()` can now be used as a context manager.
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[#94](https://github.com/hynek/stamina/pull/94)
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- Instrumentation hooks can now can return context managers.
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If they do, they are entered when a retry is scheduled and exited right before the retry is attempted.
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[#95](https://github.com/hynek/stamina/pull/95)
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---
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[Full Changelog →](https://github.com/hynek/stamina/blob/main/CHANGELOG.md)
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## Credits
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*stamina* is written by [Hynek Schlawack](https://hynek.me/) and distributed under the terms of the [MIT](https://spdx.org/licenses/MIT.html) license.
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The development is kindly supported by my employer [Variomedia AG](https://www.variomedia.de/) and all my amazing [GitHub Sponsors](https://github.com/sponsors/hynek).
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This project would not be possible without the years of incredible work that went into [Tenacity](https://tenacity.readthedocs.io/).
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## *stamina* for Enterprise
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Available as part of the [Tidelift Subscription](https://tidelift.com/?utm_source=lifter&utm_medium=referral&utm_campaign=hynek).
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The maintainers of *stamina* and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open-source packages you use to build your applications.
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Save time, reduce risk, and improve code health, while paying the maintainers of the exact packages you use.
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