wehub-resource-sync
70 lines
2.0 KiB
Markdown
70 lines
2.0 KiB
Markdown
---
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name: bazel-build-optimization
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description: Optimize Bazel builds for large-scale monorepos. Use when configuring Bazel, implementing remote execution, or optimizing build performance for enterprise codebases.
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---
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# Bazel Build Optimization
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Production patterns for Bazel in large-scale monorepos.
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## When to Use This Skill
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- Setting up Bazel for monorepos
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- Configuring remote caching/execution
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- Optimizing build times
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- Writing custom Bazel rules
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- Debugging build issues
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- Migrating to Bazel
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## Core Concepts
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### 1. Bazel Architecture
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```
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workspace/
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├── WORKSPACE.bazel # External dependencies
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├── .bazelrc # Build configurations
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├── .bazelversion # Bazel version
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├── BUILD.bazel # Root build file
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├── apps/
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│ └── web/
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│ └── BUILD.bazel
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├── libs/
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│ └── utils/
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│ └── BUILD.bazel
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└── tools/
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└── bazel/
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└── rules/
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```
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### 2. Key Concepts
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| Concept | Description |
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| ----------- | -------------------------------------- |
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| **Target** | Buildable unit (library, binary, test) |
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| **Package** | Directory with BUILD file |
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| **Label** | Target identifier `//path/to:target` |
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| **Rule** | Defines how to build a target |
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| **Aspect** | Cross-cutting build behavior |
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## Templates and detailed worked examples
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Full template library and detailed worked examples live in `references/details.md`. Read that file when you need the concrete templates.
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## Best Practices
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### Do's
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- **Use fine-grained targets** - Better caching
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- **Pin dependencies** - Reproducible builds
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- **Enable remote caching** - Share build artifacts
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- **Use visibility wisely** - Enforce architecture
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- **Write BUILD files per directory** - Standard convention
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### Don'ts
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- **Don't use glob for deps** - Explicit is better
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- **Don't commit bazel-\* dirs** - Add to .gitignore
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- **Don't skip WORKSPACE setup** - Foundation of build
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- **Don't ignore build warnings** - Technical debt
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