gh-yaleh-meta-cc-claude/skills/methodology-bootstrapping/examples/ci-cd-optimization.md

CI/CD Optimization Example

Experiment: bootstrap-007-cicd-pipeline Domain: CI/CD Pipeline Optimization Iterations: 5 Build Time: 8min → 3min (62.5% reduction) Reliability: 75% → 100% Patterns: 7 Tools: 2

Example of applying BAIME to optimize CI/CD pipelines.

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Baseline Metrics

Initial Pipeline:

• Build time: 8 min avg (range: 6-12 min)
• Failure rate: 25% (false positives)
• No caching
• Sequential execution
• Single pipeline for all branches

Problems:

1. Slow build times
2. Flaky tests causing false failures
3. No parallelization
4. Cache misses
5. Redundant steps

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Iteration 1-2: Pipeline Stages Pattern (2.5 hours)

7 Pipeline Patterns Created:

1. Stage Parallelization: Run lint/test/build concurrently
2. Dependency Caching: Cache Go modules, npm packages
3. Fast-Fail Pattern: Lint first (30 sec vs 8 min)
4. Matrix Testing: Test multiple Go versions in parallel
5. Conditional Execution: Skip tests if no code changes
6. Artifact Reuse: Build once, test many
7. Branch-Specific Pipelines: Different configs for main/feature branches

Results:

• Build time: 8 min → 5 min
• Failure rate: 25% → 15%
• V_instance = 0.65, V_meta = 0.58

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Iteration 3-4: Automation & Optimization (3 hours)

Tool 1: Pipeline Analyzer

# Analyzes GitHub Actions logs
./scripts/analyze-pipeline.sh
# Output: Stage durations, failure patterns, cache hit rates

Tool 2: Config Generator

# Generates optimized pipeline configs
./scripts/generate-pipeline-config.sh --cache --parallel --fast-fail

Optimizations Applied:

• Aggressive caching (modules, build cache)
• Parallel execution (3 stages concurrent)
• Smart test selection (only affected tests)

Results:

• Build time: 5 min → 3.2 min
• Reliability: 85% → 98%
• V_instance = 0.82 ✓, V_meta = 0.75

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Iteration 5: Convergence (1.5 hours)

Final optimizations:

• Fine-tuned cache keys
• Reduced artifact upload (only essentials)
• Optimized test ordering (fast tests first)

Results:

• Build time: 3.2 min → 3.0 min (stable)
• Reliability: 98% → 100% (10 consecutive green)
• V_instance = 0.88 ✓ ✓
• V_meta = 0.82 ✓ ✓

CONVERGED ✅

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Final Pipeline Architecture

name: CI
on: [push, pull_request]

jobs:
  fast-checks:  # 30 seconds
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Lint
        run: golangci-lint run

  test:  # 2 min (parallel)
    needs: fast-checks
    strategy:
      matrix:
        go-version: [1.20, 1.21]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-go@v2
        with:
          go-version: ${{ matrix.go-version }}
          cache: true
      - name: Test
        run: go test -race ./...

  build:  # 1 min (parallel with test)
    needs: fast-checks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-go@v2
        with:
          cache: true
      - name: Build
        run: go build ./...
      - uses: actions/upload-artifact@v2
        with:
          name: binaries
          path: bin/

Total Time: 3 min (fast-checks 0.5min + max(test 2min, build 1min))

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Key Learnings

1. Caching is critical: 60% time savings
2. Fail fast: Lint first saves 7.5 min on failures
3. Parallel > Sequential: 50% time reduction
4. Matrix needs balance: Too many variants slow down
5. Measure everything: Can't optimize without data

Transferability: 95% (applies to any CI/CD system)

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Source: Bootstrap-007 CI/CD Pipeline Optimization Status: Production-ready, 62.5% build time reduction