2xx Successful Responses

What Are 2xx Successful Responses?

HTTP 2xx Successful Responses indicate that a client request was successfully received, understood, and processed by the server.

Unlike informational responses, 2xx responses represent a final response. They tell the client that the requested operation completed successfully.

Common 2xx Status Codes

• 200 OK - The request completed successfully.

• 201 Created - A new resource was successfully created.

• 202 Accepted - The request has been accepted for processing but is not complete yet.

• 204 No Content - The request succeeded but there is no response body.

200 OK

The 200 OK response is the most common HTTP success response.

It is returned when a request has completed successfully and the server is returning the requested data.

GET /users/123

HTTP/1.1 200 OK

201 Created

The 201 Created response indicates that a new resource has been created successfully.

This is commonly returned by REST APIs after creating database records.

POST /users

HTTP/1.1 201 Created

204 No Content

The 204 No Content response indicates that the request succeeded but there is no response body to return.

It is commonly used after successful delete operations.

DELETE /users/123

HTTP/1.1 204 No Content

Why 2xx Responses Matter For DevOps

Successful responses are important production metrics because they help teams understand application availability and reliability.

• Monitoring application health

• Tracking API reliability

• Measuring successful requests

• Understanding user behaviour

Summary

HTTP 2xx responses confirm that communication between a client and server completed successfully. They are the foundation of reliable web applications and APIs.