CI/CD Multi-Platform Matrix

Matrix Strategy

Use strategy.matrix with include for specific OS/arch/language combinations. Always fail-fast: false.

Platform targets: Linux x86_64 + ARM64, macOS x86_64 + ARM64, Windows x86_64. ARM64 Linux uses cross crate.

Language Version Matrices

Caching

• Rust: Swatinem/rust-cache with cache-targets: true
• Node: actions/setup-node with cache: 'npm'
• Python: actions/cache on ~/.cache/pip
• Docker: BuildKit GHA cache (cache-from: type=gha)

Split Workflows by Domain

Separate ci-rust.yaml, ci-python.yaml, ci-node.yaml, etc. with path filters on relevant directories. Each runs lint -> build -> test -> coverage.

CI Pipeline Standards

• Workflows use task commands (never direct scripts): task setup, task lint:check, task build:all, task test:all
• Always set BUILD_PROFILE=ci in GitHub Actions
• Pre-commit hooks run in validate stage
• Stages: Validate -> Build -> Test -> Deploy

Anti-Patterns

• Cartesian product explosion (use include to select specific combos)
• No artifact caching
• Mixed domains in single workflow
• Hardcoded versions instead of matrix variables
• No cross-platform testing for FFI bindings
• No fail-fast: false (one failure hides others)