Web Development Intermediate

What is Web Performance Optimization?

Techniques to make websites load faster and respond more quickly, improving user experience and search engine rankings.

Web performance optimization covers reducing page load time, time to interactive, and perceived performance. Key techniques include image optimization (WebP format, responsive images, lazy loading), CSS/JS minification and bundling, critical CSS inlining, code splitting, browser caching with proper Cache-Control headers, CDN usage, Gzip/Brotli compression, reducing DNS lookups, preconnect/preload hints, and server-side rendering. Core Web Vitals (LCP, FID/INP, CLS) are Google's performance metrics affecting SEO rankings. Tools like Lighthouse, PageSpeed Insights, and WebPageTest measure and recommend improvements. Every 100ms of latency can reduce conversion rates.

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A high-performance RPC framework using Protocol Buffers and HTTP/2 for efficient service-to-service communication.

Google's metrics for measuring user experience quality, including loading speed, interactivity, and visual stability of web pages.

HTTP Status Codes

Standardized three-digit codes returned by web servers to indicate the result of a client's HTTP request.

MVC (Model-View-Controller)

An architectural pattern that separates an application into three components: data (Model), interface (View), and logic (Controller).

A mechanism where a server sends real-time HTTP POST notifications to a specified URL when specific events occur.

A communication protocol that enables full-duplex, real-time data exchange between a browser and server over a single connection.

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