The Requestly blog

Parth Bhardwaj · Nov 18, 2025

Understanding 2xx HTTP Status Codes: Successful Responses Explained

Explore key 2xx HTTP status codes, their meanings, and how they confirm successful server responses.

Nafees Nehar · Nov 18, 2025

Learn about Accept-Encoding in HTTP Requests

Learn what Accept-Encoding means, how it works, and why it improves website performance and load times

How to Structure Multiple GraphQL Queries in One Request?

Understand the benefits of structuring multiple GraphQL queries in one request, learn when to use them, how to optimize performance, and handle challenges.

The Ultimate Guide to Mocking APIs with Playwright

Learn how to mock APIs with Playwright and explore advanced techniques, including conditional mocking, HAR files, and dynamic responses.

Mock Service Concepts & Tools: Create Your First Mock Easily

Learn key mock service concepts, best practices, tools, and common mistakes to improve testing speed, reliability, and control across environments.

Mock vs Stub: An In-Depth Comparison for API Testing

Learn the differences between mocks and stubs, and how to choose the right one by mapping it to what your test is actually validating.

Mock vs Stub vs Fake: Core differences

This guide explains the differences between mocks, stubs, and fakes in API testing and helps you choose the right one for your test case.

What Is a Network Delay Request and Why Does It Matter?

Learn what network delay requests are, why they matter, and how to test APIs and applications using Requestly for reliable performance.

Node.js Mock Server Setup: A Complete Tutorial

Explore the full process of Node.js mock server setup, including structured endpoints, mock behaviors, and tips for long-term maintenance.

Request URL: What It Is and Why It’s Essential

Learn what a request URL is, its structure, and why it is important for API testing, debugging, and application reliability.

Rest API Client: Features, Benefits & Top Tools

Explore what a REST API Client is, its benefits, features, and top tools in 2025. Compare Requestly, HTTPie, ARC, Curl, and Thunder Client.

What is REST API: Examples, Principles, and Use Cases

Learn what REST APIs are with practical examples such as user management, e-commerce, and payment systems, and how they work in real scenarios.

The Beginner’s Guide to APIs: Types, Benefits, and Protocols

Understand what APIs are, how they work, types, benefits, and protocols that ensure secure and effective data exchange.

What Are API Keys? A Guide to Authentication and Security

APIs allow applications to communicate with each other. To control and secure access, APIs often require a method to identify the client making the request....

What is gRPC: Meaning, Benefits, and Architecture

Understand what gRPC is, its key features, use cases, and its architecture. Also, learn how to set up and implement gRPC in your application.

What Is a User-Agent Header? Complete HTTP Guide

Learn what a User-Agent header is, its key components, how it affects browsers and devices, and techniques to test user-agent headers.

What is X-Forwarded-For: A Complete Guide

Learn what X-Forwarded-For is, how it works, its impact on web security, logging, and best practices for accurate client IP tracking.

Complete Guide to X-XSS-Protection and Web Security

Learn what X XSS protection is, how it works, different X XSS attack types, how to integrate it, and advanced strategies for web security.

When to Use GraphQL Over REST API?

Learn when to use GraphQL, explore its benefits, key use cases, limitations, and how to migrate to GraphQL from REST.

X-Frame-Options Header: Setup & Best Practices

Learn how to implement, test, and monitor X-Frame-Options headers to protect websites from clickjacking and framing attacks.

Kanishk Rawat · Nov 17, 2025

Guides

How Lodash Can Simplify Your API Testing

Learn how to enhance your API testing in Requestly by importing Lodash and other libraries for effective data transformation and manipulation.

Uncategorized

Top 10 API Simulation Tools Comparison Guide

Discover the best API simulation tools in our comprehensive comparison guide, helping you streamline development and enhance testing efficiency.

XPath Contains Text in Selenium Explained with Examples

Learn how to use XPath contains and text() in Selenium to find elements by exact or partial text with practical examples.

Selenium Login Automation Testing Guide with WebDriver

Learn how to automate login functionality using Selenium WebDriver with step-by-step setup, execution, and real device testing.

Handling Cookies in Selenium: Complete Guide with Examples

Learn how to manage, add, delete, and troubleshoot cookies in Selenium WebDriver with practical examples and best practices for real device testing.

A Step-by-Step Guide on How to Launch a Browser in Selenium

Unlock the power of Selenium with our step-by-step guide to launch browsers like Chrome, Firefox, and Edge for seamless automated testing.

How to Run Failed Test Cases in TestNG

Efficiently rerun failed test cases in TestNG with our expert tips on using testng-failed.xml and IRetryAnalyzer to enhance your automation testing.