What is an API? A plain-language guide to how APIs workWhat an API is, how REST APIs work over HTTP, the methods you'll actually meet — GET, POST, PUT, PATCH, DELETE — and how to read a response.HTTP status codes explained: every code you'll actually seeWhat HTTP status codes mean, grouped by class — 1xx to 5xx — with the codes you'll meet in browsers, APIs, and server logs.HTTP vs HTTPS: what's the difference?The practical differences between HTTP and HTTPS — security, performance, SEO — explained simply.HTTP request methods explained: GET, POST, PUT, DELETE & moreWhat HTTP request methods are, what each one does, and the difference between GET, POST, PUT, PATCH, DELETE and the rest — with safe vs idempotent.What is HTTP/3? A plain explanationThe newest version of HTTP runs on QUIC, a transport built on UDP instead of TCP. Here's what changes — and why pages feel faster with it.REST API design best practices: resource naming, HTTP methods, and status codesHow to design a clean REST API: plural resource URLs, safe and idempotent HTTP methods, meaningful status codes, pagination, and error responses — with practical examples.GraphQL vs gRPC: which API technology should you choose?GraphQL and gRPC are two modern ways to build APIs. GraphQL lets clients query exactly the fields they need over a single HTTP endpoint; gRPC calls typed remote methods over HTTP/2 with binary Protocol Buffers. Compare the trade-offs and learn when to choose each.REST vs gRPC: which API style should you choose?REST and gRPC are two ways to build APIs. REST uses HTTP and JSON with universal browser support; gRPC uses HTTP/2 and Protocol Buffers for binary efficiency and code-generated stubs. Compare the trade-offs and learn when to choose each.What is CORS? Cross-Origin Resource Sharing explainedCross-Origin Resource Sharing (CORS) is the mechanism browsers use to allow or block requests between different origins. This guide explains how CORS works, why it exists, common errors, and how to fix them.REST vs GraphQL: which API style should you choose?REST and GraphQL are two ways to build web APIs. REST uses fixed endpoints and HTTP methods; GraphQL uses a single endpoint where clients query exactly the fields they need. Compare the trade-offs and learn how to choose.Web compression: how gzip and Brotli shrink the webWhen a browser loads a page, the HTML, CSS and JavaScript are usually sent compressed. Here's how gzip and Brotli work, and why Brotli often wins for text.What is a webhook? How webhooks work and how to secure themA webhook is a user-defined HTTP callback: one service sends an HTTP request to a URL you control when an event happens. Learn how they work, how they differ from polling and regular APIs, and how to verify signatures and handle retries safely. 