This is the checklist describing the essential requirements for a feature to be labeled as Alpha, Beta, or Stable. Once a feature meets the Alpha label +criteria, the feature may be included in the +feature status page on +Istio's Website. This is a shortened version of the full Feature Lifecycle document.
A development feature can be officially labeled as Alpha once it meets the following requirements:
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Config
- Requires explicit user action to enable (e.g. a config field, config resource, or installation action).
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Docs
- Reference docs are published on istio.io.
- Basic feature docs are published on istio.io describing what the feature does, how to use it, and any caveats.
- A reference to the design doc / issue is published on istio.io.
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Tests
- Test coverage is >= 70%.
- Integration tests cover core use cases with the feature enabled.
- When disabled the feature does not affect system stability or performance.
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Performance
- Performance requirements assessed as part of design.
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API
- (Optional) Initial API review.
An Alpha feature can be officially labeled as Beta once it meets the following additional requirements:
-
Config
- Can be enabled by default without requiring explicit user action.
-
Docs
- Performance expectations of the feature are documented, may have caveats.
- Documentation on istio.io includes samples/tutorials
- Documentation on istio.io includes appropriate glossary entries
-
Tests
- Test coverage is >= 80%
- Integration tests cover feature edge cases
- End-to-end tests cover samples/tutorials
- Fixed issues have tests to prevent regressions
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Performance
- Feature has baseline performance tests.
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API
- API has had a thorough API review and is thought to be complete.
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CLI
- Necessary CLI commands have been implemented and are complete.
-
Bugs
- Feature has no outstanding P0 bugs.
A Beta feature can be officially labeled as Stable once it meets the following additional requirements:
-
Tests
- Test coverage is >= 90%
- Automated tests are in place to prevent performance regressions.
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Performance
- Latency, throughput and scale are quantified and documented.
-
Bugs
- Feature has no outstanding P0 or P1 bugs.