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Micronaut Framework VS FastAPI

Compare Micronaut Framework VS FastAPI and see what are their differences

Micronaut Framework logo Micronaut Framework

Build modular easily testable microservice & serverless apps

FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
  • Micronaut Framework Landing page
    Landing page //
    2022-02-01
  • FastAPI Landing page
    Landing page //
    2023-05-14

Micronaut Framework features and specs

  • High Performance
    Micronaut is designed for low memory consumption and fast startup time, which makes it ideal for serverless and microservices architectures.
  • Compile-Time Dependency Injection
    Micronaut uses compile-time dependency injection, which eliminates reflection. This leads to faster execution, smaller binaries, and lower memory usage.
  • Kotlin Support
    Micronaut provides excellent support for Kotlin, taking advantage of Kotlin's features to make application development more concise and expressive.
  • Cloud Native
    Built with cloud-native applications in mind, Micronaut has integrations with cloud services and support for distributed configuration and service discovery.
  • Reactive Programming
    Micronaut supports reactive programming, making it easier to build scalable applications that can handle many concurrent users efficiently.
  • Easy Testing
    Micronaut provides extensive support for testing, including a built-in HTTP client that simplifies the testing of microservice interactions.

Possible disadvantages of Micronaut Framework

  • Learning Curve
    Developers familiar with traditional frameworks like Spring might experience a learning curve transitioning to Micronaut, particularly due to its annotation-driven programming model.
  • Ecosystem Maturity
    Compared to more established frameworks, Micronaut's ecosystem is still growing, which may result in fewer third-party integrations and community resources.
  • Newer Technology
    Being a relatively new framework, it might not have the depth of proven enterprise deployments that older, more established frameworks have.
  • Limited Use Cases
    While Micronaut excels in microservices and serverless environments, it may not be the best choice for applications that require traditional monolithic architectures.

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

Analysis of FastAPI

Overall verdict

  • FastAPI is widely regarded as a good choice, especially for applications that require high performance, scalability, and modern Python features. It is suitable for both simple and complex projects, making it a versatile tool in the web development ecosystem.

Why this product is good

  • FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is built on top of Starlette for web framework capabilities and Pydantic for data validation and settings management. FastAPI is known for its excellent performance, automatic generation of interactive API documentation (with Swagger and Redoc), and support for asynchronous programming. Developers appreciate its ease of use, detailed documentation, and helpful error messages.

Recommended for

  • Developers building RESTful APIs
  • Teams looking for a high-performance ASGI-based web framework
  • Projects that require asynchronous programming capabilities
  • Applications needing automatic generation of interactive API documentation
  • Python developers who prefer utilizing type hints for code clarity and validation

Micronaut Framework videos

Micronaut Framework | Build Microservices with This JVM-Based Framework | Java Techie

FastAPI videos

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Category Popularity

0-100% (relative to Micronaut Framework and FastAPI)
Web Frameworks
31 31%
69% 69
Developer Tools
10 10%
90% 90
PHP MVC Framework
100 100%
0% 0
API Tools
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Micronaut Framework and FastAPI

Micronaut Framework Reviews

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FastAPI Reviews

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative – So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businesses’ API needs in today’s evolving world.

Social recommendations and mentions

Based on our record, FastAPI should be more popular than Micronaut Framework. It has been mentiond 289 times since March 2021. 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.

Micronaut Framework mentions (42)

  • How To Introduce a New API Quickly Using Micronaut
    I would like to close out this short series with another framework that’s new (to me), called Micronaut. - Source: dev.to / 8 days ago
  • Top Backend Technologies for Scalable Web Development
    Micronaut for Microservices Micronaut is a modern Java framework built for microservices. It starts quickly, uses minimal memory, and is highly testable, making it perfect for cloud-native applications. - Source: dev.to / 3 months ago
  • Year After Switching from Java to Go: Our Experiences
    But Javas has so many of these web frameworks?! * Spring (https://spring.io/) * Spring Boot (https://spring.io/projects/spring-boot) * Helidon (https://helidon.io/) * Micronaut (https://micronaut.io/) * Quarkus (https://quarkus.io/) * JHipster (https://www.jhipster.tech/) * Vaadin (https://vaadin.com/) That's just to mention the bigger ones, there's lots of mini frameworks like Javalin (https://javalin.io/) and... - Source: Hacker News / 3 months ago
  • JPA entity relationship with Micronaut data JDBC
    Micronaut is a JVM-based framework for building lightweight, modular applications. Micronaut is the latest framework designed to make creating microservices quick and easy. - Source: dev.to / 5 months ago
  • Choosing the Right Java Microservices Framework: Spring Boot, Quarkus, Micronaut, and Beyond
    Micronaut is designed for building modular microservices with a focus on reactive programming and low resource consumption. - Source: dev.to / 6 months ago
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FastAPI mentions (289)

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What are some alternatives?

When comparing Micronaut Framework and FastAPI, you can also consider the following products

vert.x - From Wikipedia, the free encyclopedia

Django - The Web framework for perfectionists with deadlines

helidon - Helidon Project, Java libraries crafted for Microservices

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

Javalin - Simple REST APIs for Java and Kotlin

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple