HTTP Response Codes Explained Visually | 100–599 API Status Codes Guide

we explain HTTP Status Codes and API Response Codes from 100 to 599 in a simple way. Every developer working with APIs, backend development, web development, Node.js, Java, or REST services must understand these response codes.

HTTP status codes help developers understand whether a request was successful, failed, or requires additional action.

In this guide you will learn:

✔ Informational Responses (100–199)
✔ Successful Responses (200–299)
✔ Redirection Messages (300–399)
✔ Client Errors (400–499)
✔ Server Errors (500–599)

We also explain the most commonly used API errors such as:

400 Bad Request

401 Unauthorized

403 Forbidden

404 Not Found

409 Conflict

422 Validation Error

429 Too Many Requests

500 Internal Server Error

503 Service Unavailable

This video is useful for backend developers, API testers, software engineers, and students learning web development.

If you are building REST APIs, microservices, or testing APIs, understanding HTTP response codes is essential.

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Видео HTTP Response Codes Explained Visually | 100–599 API Status Codes Guide канала ANIKA ANUS GAMING