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Apache JMeter VS JSON Server

Compare Apache JMeter VS JSON Server and see what are their differences

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Apache JMeter logo Apache JMeter

Apache JMeterโ„ข.

JSON Server logo JSON Server

Get a full fake REST API with zero coding in less than 30 seconds. For front-end developers who need a quick back-end for prototyping and mocking
  • Apache JMeter Landing page
    Landing page //
    2018-09-29
  • JSON Server Landing page
    Landing page //
    2023-08-01

Apache JMeter features and specs

  • Open Source
    Apache JMeter is free to use, reducing the overall cost of testing and allowing for significant customization by the community.
  • Extensibility
    JMeter is highly extensible with plugins, which can add additional functionalities and capabilities tailored to specific needs.
  • Strong Community Support
    Due to its long history and widespread usage, JMeter benefits from a large, active community that provides tutorials, plugins, and troubleshooting help.
  • Supports Various Protocols
    JMeter supports a wide range of testing protocols, including HTTP, HTTPS, FTP, LDAP, JDBC, and JMS, making it versatile for different types of applications.
  • Continuous Integration
    JMeter can be easily integrated with CI/CD tools like Jenkins, enabling automated performance testing in the development pipeline.
  • Graphical Interface
    The graphical user interface (GUI) makes it easier for testers to design and configure testing scenarios without extensive programming knowledge.

Possible disadvantages of Apache JMeter

  • Resource Intensive
    JMeter can be resource-intensive, especially when simulating high loads, which may require substantial hardware to mimic real-world scenarios.
  • Steep Learning Curve
    Despite its GUI, JMeter can be complex to learn and use effectively, especially for those who are new to performance testing.
  • Limited Reporting
    JMeter's built-in reporting capabilities can be somewhat limited, requiring additional tools or plugins for more advanced reporting and analysis.
  • Not Ideal for UI Testing
    JMeter is not suitable for front-end or UI testing, as it is primarily designed for performance and load testing of backend services.
  • Memory Consumption
    The GUI mode, in particular, can consume a significant amount of memory, impacting performance during large-scale tests.

JSON Server features and specs

  • Ease of Setup
    JSON Server can be set up quickly with minimal configuration, making it ideal for prototyping and rapid development. It allows developers to have a fully functioning REST API within minutes.
  • RESTful API
    It provides a standard RESTful API out of the box, allowing developers to perform all CRUD operations. This is helpful for simulating a real-world server while testing client-side applications.
  • Customization
    JSON Server supports middlewares, routes, and custom rules, allowing developers to customize the behavior and structure of the API to better suit their needs.
  • Fakes Backend Data
    It's great for simulating backend responses without needing a real backend setup, useful in front-end development to test components and interactions.
  • Lightweight
    As a lightweight server, it requires fewer resources and is quite simple compared to setting up a full-fledged backend server.

Possible disadvantages of JSON Server

  • Not for Production
    JSON Server is designed for development and testing. It is not suitable for production use due to performance limits and lack of robust security features.
  • Limited Functionality
    While JSON Server is great for basic CRUD operations, it lacks advanced features like authentication, authorization, and complex querying.
  • Data Persistence
    Data is stored in a JSON file, and while this is convenient for testing, it is not suitable for applications that require persistent and scalable data storage.
  • In-memory Limitations
    Being an in-memory server, it may have issues with handling large datasets or complex data structures efficiently.
  • Manual Data Reset
    Any changes made to the JSON file while the server is running require manual resets or reloads to reflect in the API, which can be cumbersome during continuous development cycles.

Apache JMeter videos

Book Review - Master Apache JMeter - From load testing to DevOps

JSON Server videos

Angular CRUD with Web API Tutorial Part #3 - Setup Local JSON Server and Mock API Endpoints

Category Popularity

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Website Testing
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Software Testing
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API Tools
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User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Apache JMeter and JSON Server

Apache JMeter Reviews

Best Database Testing Tools in 2025
Apache JMeter is a powerful, open-source database testing tool known for its versatility across various testing scenarios. As a comprehensive, multiโ€‘database IDE, JMeter enables users to design, execute, and analyze complex tests across various protocols including JDBC. It supports load, stress, and functional testing, and is favored by both beginners and advanced users....
Source: www.devart.com
Top 20 Best Automation Testing Tools in 2019 (Comprehensive List)
Apache JMeter is an open-source Java desktop application designed for load testing. It mainly focuses on web applications. This tool can also be employed for unit testing and limited functional testing.
Top 20 Best Automation Testing Tools in 2018 (Comprehensive List)
Apache JMeter is an open-source Java desktop application designed for load testing. It mainly focuses on web applications. This tool can also be employed for unit testing and limited functional testing.

JSON Server Reviews

We have no reviews of JSON Server yet.
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Social recommendations and mentions

Based on our record, JSON Server seems to be a lot more popular than Apache JMeter. While we know about 45 links to JSON Server, we've tracked only 2 mentions of Apache JMeter. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Apache JMeter mentions (2)

  • Java naming facts
    Before Jakarta EE there was Apache Jakarta which was effectively the group name for Java based projects within the Apache project. Source: over 4 years ago
  • Are servers multithreaded by default?
    If you remove Spring from the equation you need to build the servlets yourself (according to the Sevlet API). You probably package the servlets in a war-file (with some configuration files), the war-file can then be deployed in a servlet server (ie Tomcat,). The sevlet servser usually handles the thread pool and other resources (ie database connection pools) for you, so you "only" have to provide a servlet that... Source: about 5 years ago

JSON Server mentions (45)

  • Building a CRUD app with React Query, TypeScript, and Axios
    We'll be using json-server to create the REST API that we'll fetch data from. In the root of the project, create a db.json file with the contents. - Source: dev.to / about 2 years ago
  • Full Stack To Do list, a step-by-step tutorial
    Our backend will be little more than a two-way translation layer between the database and the user interface (UI). Later in this post we will identify other responsibilities of a backend but our implementation will be kept simple to demonstrate the fundamental machinery and concepts. It is worth noting the backend comes in two parts, web server and application server. Both json-server and Express are able to... - Source: dev.to / about 3 years ago
  • Improve Frontend-Backend development harmony with JSON-Server
    JSON-Server creates fake REST API with a minimum amount of configuration, it provides a simple way to create mock RESTful APIs and easily define the required endpoints, allows easy definition of the data schema in a JSON file and can serve as a reference for each figure in the project. - Source: dev.to / about 3 years ago
  • Dictionary app
    I thought about usingJson Server (hosting the repo with the words on Github to begin with), Googlesheets, or maybe Firestore (i would prefer not to use it ,to avoid extra costs just in case it gets a reasonable amount of users). It isnt a big app so I just want a simple solution for storing the words and fetching them. Source: about 3 years ago
  • Playwright - Not just for Frontend
    First, I didn't create a backend API for this example, but I used a fake API to test. I created it with json-server and json-server-auth. They are two npm packages that use a JSON file as a database and expose the database in an API. You can find more about json-server in its documentation and about json-server-auth here. - Source: dev.to / over 3 years ago
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What are some alternatives?

When comparing Apache JMeter and JSON Server, you can also consider the following products

soapUI - SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.

JSON Placeholder - JSON Placeholder is a modern platform that provides you online REST API, which you can instantly use whenever you need any fake data.

Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.

Postman - The Collaboration Platform for API Development

Micro Focus ALM - Learn how Micro Focusโ€™ Application Lifecycle Management (ALM) software tools provide the agility, visibility, and collaboration solutions you need to optimize app development and testing, foster innovation, and improve the user experience.

mocki Fake JSON API - mocki Fake JSON API is an advanced platform that offers you to create API for personal use or testing purposes.