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skills/methodology-bootstrapping/examples/ci-cd-optimization.md

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+# 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.
+
+---
+
+## 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
+
+---
+
+## 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
+
+---
+
+## Iteration 3-4: Automation & Optimization (3 hours)
+
+**Tool 1**: Pipeline Analyzer
+```bash
+# Analyzes GitHub Actions logs
+./scripts/analyze-pipeline.sh
+# Output: Stage durations, failure patterns, cache hit rates
+```
+
+**Tool 2**: Config Generator
+```bash
+# 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
+
+---
+
+## 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** ✅
+
+---
+
+## Final Pipeline Architecture
+
+```yaml
+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))
+
+---
+
+## 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)
+
+---
+
+**Source**: Bootstrap-007 CI/CD Pipeline Optimization
+**Status**: Production-ready, 62.5% build time reduction