HTTP2

Server-Sent Events

Server-Sent Events (SSE) is a web standard that lets a server push a continuous stream of text-based updates to a client over a single, long-lived HTTP connect…

Content Delivery Network (CDN)

A Content Delivery Network (CDN) is a geographically distributed network of servers that caches and delivers web content — such as images, scripts, and static…

DNS (Domain Name System)

The Domain Name System (DNS) is the internet's hierarchical naming system that translates human-readable domain names, like example.com, into the numeric IP ad…

SSL/TLS Certificate

An SSL/TLS certificate is a digital file that cryptographically verifies a website's identity and enables encrypted HTTPS connections between a server and its…

HTTP/2

HTTP/2 is a major revision of the HTTP protocol that improves performance over HTTP/1.1 through multiplexed requests over a single connection, header compressi…

HTTP/3

HTTP/3 is the third major version of the Hypertext Transfer Protocol, built on top of QUIC instead of TCP to reduce connection latency and eliminate head-of-li…

CORS

CORS (Cross-Origin Resource Sharing) is a browser security mechanism that controls whether a web page running on one origin is allowed to make requests to a se…

HTTP/2 vs HTTP/1.1: What Changed?

HTTP/2 replaces HTTP/1.1’s text-based, one-request-per-connection model with a binary framing layer that multiplexes many requests and responses over a single…

What is Chunked Transfer Encoding?

Chunked transfer encoding is an HTTP/1.1 mechanism that lets a server stream a response body in a series of independently-sized chunks without knowing the tota…

What is HTTP Pipelining?

HTTP pipelining is an HTTP/1.1 technique where a client sends multiple requests over a single persistent TCP connection without waiting for each response, but…

What is Connection Multiplexing and How Does HTTP/2 Use It?

Connection multiplexing is sending multiple independent logical streams of data over a single shared physical or transport connection instead of opening a sepa…

What Was HTTP/2 Server Push, and Why Was It Deprecated?

HTTP/2 Server Push let a server proactively send resources (like CSS or JS) to the client alongside an HTML response, before the browser even requested them, b…

HTTP/1.1 vs HTTP/2: What Changed?

HTTP/2 replaces HTTP/1.1’s text-based, one-request-per-connection-slot model with a single binary-framed connection that multiplexes many concurrent request/re…