Web Development Beginner

What is Sitemap XML?

An XML file that lists all important URLs on a website, helping search engines discover and crawl content efficiently.

A sitemap.xml file provides search engines with a roadmap of your website's content. Each URL entry can include last modification date (lastmod), change frequency (changefreq), and relative priority (priority 0.0-1.0). Sitemap indexes reference multiple sitemap files for large sites (50,000 URL limit per file). Dynamic sitemaps are generated programmatically from database content — listing all product pages, blog posts, category pages, and static pages. Submit sitemaps to search engines via Google Search Console and Bing Webmaster Tools, or reference them in robots.txt. Regular sitemap updates help search engines discover new content quickly and understand site structure.

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Progressive Enhancement

A web design strategy that starts with basic functionality for all browsers and progressively adds advanced features for capable ones.

An HTML element that tells search engines which URL is the preferred version of a page when duplicate or similar content exists at multiple URLs.

Web Caching Strategies

Techniques for storing copies of web resources at various levels to reduce server load, bandwidth, and response times.

The second major version of HTTP that improves performance through multiplexing, header compression, and server push.

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

API (Application Programming Interface)

A set of rules and protocols that allows different software applications to communicate and exchange data.

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