Performance
Performance Patterns
Delight comes from an interface that responds immediately and stays responsive. These patterns balance critical-path loading, runtime efficiency, and perceived speed so fast feels effortless.
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Patterns
Performance
Performance Guides
Framework-level thinking before you pick a pattern.
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Managing Async UX States
Patterns for shaping resilient loading, error, and optimistic flows across your frontend.
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Optimizing Perceived Performance
Practical playbook for keeping interfaces feeling fast with skeletons, preloading, and smart asset delivery.
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Performance Patterns
Specific, reusable techniques you can drop into production.
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Async Boundary
Define fallback UI to show while asynchronous components or data are loading.
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Bundle Size Monitoring
Track JavaScript bundle sizes over time to prevent performance regressions.
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Code Splitting
Break application code into smaller bundles loaded on demand to reduce initial load time.
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Computed Value
Derive values from state only when dependencies change rather than on every render.
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Critical Asset Preload
Instruct browsers to prioritize loading essential resources for faster initial renders.
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Dynamic Import
Load modules asynchronously at runtime rather than bundling everything upfront.
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Error Boundary
Catch JavaScript errors in component trees and display fallback UI gracefully.
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Font Loading Strategy
Control how and when web fonts load to prevent layout shifts and invisible text.
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Icon System
Manage icons as a cohesive system using SVG sprites, icon fonts, or component libraries.
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Image Optimization
Compressing, resizing, and serving images in modern formats to reduce bandwidth usage.
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Lazy Loading
Defer loading of non-critical resources until they're needed.
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Memoization
Cache expensive computation results to avoid recalculating with identical inputs.
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Progressive Image
Load low-quality image placeholders first, then replacing with high-quality versions.
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Resource Hint
Use preload, prefetch, and preconnect to optimize resource loading timing.
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Route-Based Splitting
Split code automatically at route boundaries for natural loading chunks.
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Skeleton Loading
Show placeholder content that mimics the layout of incoming data for perceived performance.
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Stable Reference
Maintain consistent object and function references across renders to prevent unnecessary updates.
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SVG Optimization
Remove unnecessary metadata and simplify paths to reduce SVG file sizes.
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Tree Shaking
Eliminate unused code from bundles during the build process.
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Virtual Scrolling
Render only visible list items in the viewport to handle massive datasets efficiently.
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