A Guide to Instant Loading Angular Apps
summary
Claim: first-render times commonly hit ~16 seconds and vendor bundles balloon to 3–5 MB; compile cost alone can be ~2.5s per 1 MB on slow phones. Practical fixes shown: AOT and build optimizer and webpack updates yield ~10–20% savings, lazy loading cuts a login page from ~5 MB to ~200 KB, analyzing with webpack bundle analyzer or source-map-explorer exposes 300 KB offenders (rxjs, moment), Ivy promises 35 KB → 3.7 KB for tiny apps, and service workers and server-side rendering make perceived loads instant.
AI-written summary · about
chapters (14)
- 0:00Intro
- 0:15A Guide to Instant Loading Angular Apps
- 2:13How long does it take for an average SPA to load?
- 4:29Preparing the bundle for best load times
- 5:03Staying up to date is the easiest way to gain performance.
- 6:03Whats helps with bundle size in Angular v6?
- 7:01AOT pre-compiles your app for a faster boot and smaller bundle
- 7:542.1 Build Optimizer helps further reduce the size of your bundle
- 8:402.2 Use ng eject to customize your webpack config (for custom builds)
- 9:55Lazy Loading helps break your app into smaller bundles
- 11:14Analyze your bundles to strip out code you are not using.
- 14:11Service workers are awesome at caching your build
- 15:22A different approach, Angular Universal can improve perceived responsiveness
- 16:05Prevention is better than cure: Performance Budgets
