Web Development Beginner

What is AJAX?

A technique for making asynchronous HTTP requests from a web page without reloading the entire page.

AJAX (Asynchronous JavaScript and XML) enables dynamic page updates by fetching data from the server in the background. Originally using XMLHttpRequest, modern JavaScript uses the Fetch API: fetch('/api/data').then(r => r.json()).then(data => updateUI(data)).

AJAX revolutionized web development by enabling single-page-like experiences. Common uses include form submission without reload, infinite scrolling, auto-complete search, live notifications, and real-time dashboards. Despite the name, JSON has largely replaced XML as the data format.

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REST (Representational State Transfer)

An architectural style for designing networked applications using standard HTTP methods and stateless communication.

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

JavaScript Object Notation — a lightweight data interchange format that is easy for humans to read and machines to parse.

API Rate Limiting

A strategy for limiting the number of API requests a client can make within a specified time window to protect server resources.

Storing copies of frequently accessed data in faster storage to reduce load times and server processing.

Web Caching Strategies

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

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