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docs/BUILD_OPTIMIZATION_GUIDE.md
2026-02-09 21:51:46 -08:00

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# Build & Test Workflow Optimization Guide
**Date**: 2025-01-27
**Purpose**: Guide for optimizing build and test workflows
**Status**: Complete
---
## Overview
This guide provides strategies and best practices for optimizing build and test workflows across the integrated workspace.
---
## Optimization Strategies
### 1. Build Caching
#### Turborepo Caching
**Configuration**: `turbo.json`
```json
{
"pipeline": {
"build": {
"dependsOn": ["^build"],
"outputs": ["dist/**", ".next/**", "build/**"],
"cache": true
}
}
}
```
**Benefits**:
- Faster builds (skip unchanged packages)
- Reduced CI/CD time
- Lower resource usage
#### Docker Layer Caching
```dockerfile
# Cache dependencies
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile
# Copy source (changes more frequently)
COPY src ./src
RUN pnpm build
```
### 2. Parallel Execution
#### Turborepo Parallel Tasks
```json
{
"pipeline": {
"build": {
"dependsOn": ["^build"]
},
"test": {
"dependsOn": ["build"]
}
}
}
```
**Benefits**:
- Build packages in parallel
- Run tests concurrently
- Faster overall execution
### 3. Incremental Builds
#### TypeScript Incremental Compilation
```json
{
"compilerOptions": {
"incremental": true,
"tsBuildInfoFile": ".tsbuildinfo"
}
}
```
**Benefits**:
- Only rebuild changed files
- Faster compilation
- Better IDE performance
### 4. Test Optimization
#### Test Filtering
```bash
# Run only changed tests
pnpm test --changed
# Run tests in parallel
pnpm test --parallel
# Use test cache
pnpm test --cache
```
#### Test Sharding
```bash
# Split tests across workers
pnpm test --shard=1/4
pnpm test --shard=2/4
pnpm test --shard=3/4
pnpm test --shard=4/4
```
---
## CI/CD Optimization
### 1. Conditional Execution
```yaml
# Only run if relevant files changed
jobs:
test:
if: contains(github.event.head_commit.modified, 'src/')
```
### 2. Matrix Strategy
```yaml
strategy:
matrix:
node-version: [18, 20]
os: [ubuntu-latest, windows-latest]
```
### 3. Artifact Caching
```yaml
- uses: actions/cache@v3
with:
path: |
node_modules
.next/cache
key: ${{ runner.os }}-${{ hashFiles('**/pnpm-lock.yaml') }}
```
---
## Monitoring & Metrics
### Build Metrics
Track:
- Build duration
- Cache hit rate
- Test execution time
- Resource usage
### Optimization Targets
- **Build time**: < 5 minutes (incremental)
- **Test time**: < 10 minutes (full suite)
- **Cache hit rate**: > 80%
- **Parallel efficiency**: > 70%
---
## Best Practices
### Build Optimization
- Use build caching
- Enable incremental builds
- Parallelize where possible
- Minimize dependencies
### Test Optimization
- Run tests in parallel
- Use test filtering
- Cache test results
- Optimize test setup
### CI/CD Optimization
- Conditional execution
- Artifact caching
- Parallel jobs
- Fast feedback
---
**Last Updated**: 2025-01-27