Performance: Rails installation and setup
MEDIUM IMPACT
This affects the initial page load speed and development environment responsiveness by determining how quickly Rails can start and serve requests.
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Rails installation and setup - Performance & Optimization
Setting up a new Rails project for fast development and loading
Ruby on Rails
rails new myapp --skip-test --skip-system-test
Keeps Bootsnap enabled for faster boot times and uses default JavaScript and Turbolinks for better page load performance.
📈 Performance Gainreduces server startup time by up to 50%, improving LCP
Setting up a new Rails project for fast development and loading
Ruby on Rails
rails new myapp --skip-javascript --skip-turbolinks --skip-test --skip-system-test --skip-bootsnap
Skipping essential components like Bootsnap can slow down boot time and page load during development.
📉 Performance Costincreases server startup time by 1-2 seconds, affecting LCP during development
Performance Comparison
| Pattern | Server Startup Time | Asset Compilation | Initial Response Time | Verdict |
|---|---|---|---|---|
| Minimal setup with Bootsnap | Fast (under 1s) | Optimized | Fast (under 200ms) | [OK] Good |
| Setup skipping Bootsnap | Slow (2-3s) | Unoptimized | Slower (400ms+) | [X] Bad |
Rendering Pipeline
Rails installation and setup influence how quickly the server can start and respond, impacting the time before the browser receives HTML to render.
→Server Startup
→Initial HTML Response
→Asset Compilation
⚠️ BottleneckServer Startup and Asset Compilation
Core Web Vital Affected
LCP
This affects the initial page load speed and development environment responsiveness by determining how quickly Rails can start and serve requests.
Optimization Tips
1Always enable Bootsnap caching for faster server startup.
2Precompile assets before deployment to reduce initial load delays.
3Avoid skipping essential components that improve boot and response times.
Performance Quiz - 3 Questions
Test your performance knowledge
Which Rails setup option helps improve server startup time?
DevTools: Network
How to check: Open DevTools, go to Network tab, reload the page, and observe the time to first byte (TTFB) and document load time.
What to look for: Look for fast TTFB and quick document load times indicating efficient server response and asset delivery.