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FastAPI VS ASP.NET Core

Compare FastAPI VS ASP.NET Core and see what are their differences

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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.

ASP.NET Core logo ASP.NET Core

With ASP.
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • ASP.NET Core Landing page
    Landing page //
    2023-08-18

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.

ASP.NET Core features and specs

  • Cross-Platform Support
    ASP.NET Core is a cross-platform framework, which means you can run your applications on Windows, macOS, and Linux. This flexibility allows developers to target a wider range of environments without being locked into a single operating system.
  • High Performance
    ASP.NET Core is known for its high performance, being built from the ground up to optimize speed and scalability. It uses a modular framework architecture and supports asynchronous programming, making it suitable for modern, high-traffic applications.
  • Unified MVC and Web API Frameworks
    In ASP.NET Core, MVC and Web API frameworks are unified into a single framework, simplifying the development model for building web and API-based applications.
  • Dependency Injection
    Built-in support for dependency injection simplifies the management of dependencies across the application, promoting cleaner architecture and testability.
  • Open Source and Community Support
    ASP.NET Core is open source and has a strong community around it. This means that developers have access to the source code and can contribute to its development. It also benefits from continuous improvements driven by community feedback.
  • Cloud Integration
    ASP.NET Core is designed with cloud deployment in mind, providing features and templates for streamlined integration with cloud platforms such as Azure.

Possible disadvantages of ASP.NET Core

  • Learning Curve
    While powerful, ASP.NET Core can have a steep learning curve for developers new to the framework or web development in general, due to its comprehensive set of features and tools.
  • Maturity of Third-Party Libraries
    Compared to the .NET Framework, some third-party libraries may not be fully mature or offer as many features, given that ASP.NET Core is a more recent platform.
  • Frequent Updates
    ASP.NET Core has a fast release cycle, which can be challenging for developers to keep up with. Frequent updates can mean regular changes to the framework that might require adjustments in application code.
  • Limited Windows-Specific Technology Support
    Some Windows-specific technologies and libraries might have limited or no support in ASP.NET Core, which can be a disadvantage for applications heavily reliant on those technologies.

FastAPI videos

+ Add

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

ASP.NET Core videos

+ Add

Intro to ASP.NET Core Razor Pages - From Start to Published

Category Popularity

0-100% (relative to FastAPI and ASP.NET Core)

FastAPI

ASP.NET Core

Developer Tools
81 81%
Developer Tools
19% 19
Web Frameworks
67 67%
Web Frameworks
33% 33
API Tools
100 100%
API Tools
0% 0
Python Web Framework
58 58%
Python Web Framework
42% 42

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FastAPI and ASP.NET Core

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.
Source: tms-outsource.com
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/...
Source: www.stratascratch.com
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.
Source: alternativetoapp.com
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.
Source: www.fissionlabs.com

ASP.NET Core Reviews

Top 5 Flutter Alternatives for Cross-Platform Development
As for performance, both ASP.NET and Flutter perform really well. For ASP.NET Core, it’s partly due to the lightweight and efficient Kestrel web server. Flutter’s speed is thanks to the Dart VM and Ahead-of-Time (AOT) compilation.
Source: www.miquido.com
Exploring 15 Powerful Flutter Alternatives
ASP.NET Core is an open-source and cross-platform framework for building modern cloud-enabled web apps on Windows, Mac, and Linux. One unique capability ASP.NET Core introduces relates to scalability. The framework provides native integration with cloud platforms like Azure that allow web apps to scale up or out to potentially even millions of users with no code...
Source: positiwise.medium.com

Social recommendations and mentions

Based on our record, FastAPI seems to be a lot more popular than ASP.NET Core. While we know about 265 links to FastAPI, we've tracked only 5 mentions of ASP.NET Core. 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.

FastAPI mentions (265)

  • Top 20 Python API Frameworks with OpenAPI Support
    FastAPI is a modern, high-performance web framework for building APIs with Python 3.6+ based on standard Python type hints. It is designed for quick development and high efficiency. Zuplo is a proud sponsor of the FastAPI project, to help drive API development in Python. - Source: dev.to / 20 days ago
  • How to Promote and Market your API: SPECtacular OpenAPI
    For Small teams and Startups I would recommend picking an API framework that automatically generates an OpenAPI spec through your code. Be very careful in which framework you pick as many claim to have OpenAPI support, but in reality only support a few fields. Many recent frameworks are built from the ground up around OpenAPI support. My recommendations are Huma for Go, Tsoa for Typescript, and FastAPI for Python.... - Source: dev.to / 20 days ago
  • How to Build your very own Google's NotebookLM
    FastAPI serves as our backend framework, chosen for several compelling reasons:. - Source: dev.to / about 1 month ago
  • Pydantic: The end of manual validations! ✨
    One of the most prominent use cases of Pydantic is in FastAPI, a modern web framework for building APIs with Python. FastAPI uses Pydantic models extensively for request body validation, query parameters, and response schemas. - Source: dev.to / about 2 months ago
  • Writing Integration And Unit Tests for a Simple Fast API application using Pytest
    Python is a great language for building various types of applications, especially in today's landscape where machine learning and AI are rapidly advancing. With this growth in services, there’s a strong need for well-designed, maintainable, and scalable APIs. That’s where FastAPI comes in, a powerful async web API framework for Python that's both simple and robust https://fastapi.tiangolo.com/. - Source: dev.to / about 2 months ago
View more

ASP.NET Core mentions (5)

  • The Case For Go Backends
    However, usage of a C# framework like ASP .NET Core or a Java framework like OfficeFloor are more than capable in the right hands. The key is to understand the tradeoffs of each language and framework, and to choose the right tool for the job. - Source: dev.to / almost 2 years ago
  • Exploring Xperience By Kentico: Introductions
    The administration UI is now built on React and ASP.NET Core which means it's fast 🚀! - Source: dev.to / over 2 years ago
  • Trying to learn ASP.NET core, but confused by the documentation
    Per https://dotnet.microsoft.com/en-us/learn/aspnet/what-is-aspnet-core, "ASP.NET Core is the open-source version of ASP.NET, that runs on macOS, Linux, and Windows. ASP.NET Core was first released in 2016 and is a re-design of earlier Windows-only versions of ASP.NET.". Source: over 2 years ago
  • How can I convince my boss not to use Windows Server?
    But how about you both get your wishes: ASP.NET Core? Use a Linux server - with which you are familiar with, to host the live/production version. And the web application itself can be locally developed and tested in ASP.NET on a Windows server, which is what your boss wants? Source: about 3 years ago
  • 3 Different Hosting Models in Blazor
    Let’s remember that ASP.NET Core is cross-platform and can run practically anywhere. If you find yourself using C # for all your development, this is probably the best scenario for you to use anyway. With it, you can deploy your web application, which would also contain your Blazor Wasm assets in the same location. - Source: dev.to / almost 4 years ago

What are some alternatives?

When comparing FastAPI and ASP.NET Core, you can also consider the following products

Django - The Web framework for perfectionists with deadlines

ASP.NET - ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.

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

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

CodeBehind Framework - CodeBehind is a new framework based on .NET Core version 7.0. The CodeBehind framework inherits all the features of .NET Core and gives it more simplicity and flexibility. CodeBehind framework is owned by Elanat.

Laravel - A PHP Framework For Web Artisans

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