This is the checklist describing the essential requirements for a feature to be labeled as Alpha, Beta, or Stable. 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:
-
Config: Requires explicit user action to enable (e.g. a config field, config resource, or installation action).
-
Docs: Reference docs are published on istio.io.
-
Docs: Basic feature docs are published on istio.io describing what the feature does, how to use it, and any caveats.
-
Docs: A reference to the design doc / issue is published on istio.io.
-
Tests: Test coverage is 90%.
-
Tests: Integration tests cover core use cases with the feature enabled.
-
Tests: When disabled the feature does not affect system stability or performance.
-
Performance: Performance requirements assessed as part of design.
-
API (Optional): Initial API review.
An Alpha feature can be officially labeled as Beta once it meets the following additional requirements:
-
API: API has had a thorough API review and is thought to be complete.
-
CLI: Necessary CLI commands have been implemented and are complete.
-
Config: Can be enabled by default without requiring explicit user action.
-
Bugs: Feature has no outstanding P0 bugs.
-
Docs: Performance expectations of the feature are documented, may have caveats.
-
Docs: Documentation on istio.io includes samples/tutorials
-
Docs: Documentation on istio.io includes appropriate glossary entries
-
Tests: Test coverage is 95%
-
Tests: Integration tests cover feature edge cases
-
Tests: End-to-end tests cover samples/tutorials
-
Tests: Fixed issues have tests to prevent regressions
-
Performance: Feature has baseline performance tests.
A Beta feature can be officially labeled as Stable once it meets the following additional requirements:
-
Bugs: Feature has no outstanding P0 or P1 bugs.
-
Perf: Performance (latency/scale) is quantified and documented.
-
Tests: Automated tests are in place to prevent performance regressions.