Improving Angular App Performance: Profiling and Code Optimization Strategies
A blazing-fast Angular application is the backbone of a great user experience. But as features grow, performance bottlenecks can creep in.
1. Profiling:
Embrace the Angular Profiler: This built-in tool helps pinpoint sluggish components and exposes the change detection cycle for scrutiny.
Chrome DevTools to the Rescue: Dive deeper with Chrome DevTools. Analyze network requests, JavaScript execution times, and identify performance drains.
https://angular.io/guide/devtools#profile-your-application
2. Change Detection Optimization:
OnPush for Efficiency: Implement the OnPush change detection strategy in components with minimal updates. This minimizes unnecessary checks, boosting performance.
trackBy for ngFor Finesse: When using ngFor for lists, leverage the trackBy function. This optimizes how Angular tracks list items, preventing needless re-renders.
https://angular.io/guide/change-detection
3. Bundle Size Reduction:
AOT Compilation for the Win: Enable Ahead-of-Time (AOT) compilation. This generates smaller, optimized JavaScript bundles, leading to faster loading times.
Tree-Shaking Magic: Utilize tree-shaking, a process that intelligently removes unused code from your final build. This keeps your app lean and mean.
https://medium.com/front-end-weekly/optimize-angular-bundle-size-f5392f0ae947
https://angularindepth.com/posts/1217/how-to-reuse-common-layouts-in-angular-using-router
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