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FastAPI VS Rust

Compare FastAPI VS Rust and see what are their differences

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Contents:
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  3. » Reviews
  4. » Alternatives

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.

Rust logo Rust

A safe, concurrent, practical language
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • Rust Landing page
    Landing page //
    2023-05-09

We recommend LibHunt Rust for discovery and comparisons of trending Rust projects.

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.

Rust features and specs

  • Memory Safety
    Rust’s ownership system guarantees memory safety without a garbage collector, preventing common bugs such as null pointer dereferencing, buffer overflows, and data races.
  • Performance
    Rust aims to provide memory safety while maintaining high performance. It is often as fast as C and C++ due to zero-cost abstractions.
  • Concurrency
    Rust's ownership and type system make it easier to write safe concurrent code, helping developers avoid concurrency issues.
  • Tooling
    Rust has excellent tooling, including the Cargo package manager and build system, and Rustfmt for code formatting.
  • Community and Ecosystem
    Rust has a growing community and ecosystem, with active contributions and a wide range of libraries and frameworks available.
  • Strong Typing and Error Handling
    Rust’s type system and pattern matching compel developers to handle errors and edge cases, leading to more robust and predictable code.

Possible disadvantages of Rust

  • Learning Curve
    Rust’s advanced features such as its ownership system and lifetimes can be difficult for beginners to grasp, making it harder to learn compared to some other languages.
  • Compilation Time
    Rust can have longer compilation times, especially for large codebases, which can slow down the development process.
  • Ecosystem Maturity
    Although growing, Rust's ecosystem is not yet as mature as those of more established languages like JavaScript, Python, or even C++, leading to fewer available libraries and frameworks for certain tasks.
  • Complexity of Code
    The strictness of Rust's borrow checker can lead to more complex and verbose code as developers explicitly manage ownership and lifetimes.
  • Tool and Library Development
    Despite the rapid growth, some tools and libraries are still under development or lack the polish of their counterparts in more mature languages.

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

Analysis of Rust

Overall verdict

  • Yes, Rust is considered very good by many developers, especially those who need to write safe and efficient code. Its growing community and ecosystem are further testament to its strengths.

Why this product is good

  • Rust is highly regarded for its memory safety without a garbage collector, providing developers with performance and safety guarantees. It has powerful concurrency support, expressive type system, and excellent tooling, making it a favorite for systems programming, web assembly, and other performance-critical applications.

Recommended for

  • System programmers who need to manage memory and resources efficiently.
  • Developers working on web assembly projects.
  • Teams that require safe concurrency mechanisms.
  • C and C++ developers looking for modern language alternatives.
  • Open-source contributors who want to be part of an active and welcoming community.

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

Rust videos

+ Add

Rust Crash Course | Rustlang

More videos:

  • Review - Why You Should & Shouldn't Learn the Rust Programming Language
  • Review - All About Rust

Category Popularity

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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 FastAPI and Rust

FastAPI Reviews

  1. Kurslog team
    · Working at Kurslog ·

    When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding.

    The combination of Pydantic for data validation and built-in async support keeps our shared codebase clean, strictly typed, and reliable. But the biggest highlight for our cross-functional team is the automatic generation of interactive OpenAPI (Swagger) documentation. Our frontend and mobile developers no longer have to wait for backend engineers to manually update API docs; everything stays perfectly in sync automatically. It has drastically improved our team's communication and delivery speed.

    Pros:    Blazing fast performance (on par with nodejs and go)|Native asynchronous support out of the box|Automatic, interactive documentation generation (swagger/redoc)|Strict typing and data validation with pydantic
    Cons:    Smaller plug-and-play ecosystem compared to older frameworks like django|Requires our architects to design the project structure and directory layout from scratch
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

Rust Reviews

Top 5 Most Liked and Hated Programming Languages of 2022
A survey by Stack Overflow reveals that about 83.5% of 90000 developers loved Rust and tagged it to be the most adorable programming language. Rust is that general-purpose programming language that mainly caters to excellent performance and safety. This multi-worldview programming language has syntax similar to that of C++.
Source: www.analyticsinsight.net
Top 10 Rust Alternatives
Several programming languages like Rust are among the popular ones. However, people are in search of some good alternatives to Rust. Therefore, today we will be talking more about the top 10 alternatives to Rust.
Source: blog.back4app.com
The 10 Best Programming Languages to Learn Today
Rust is a fairly advanced language, so you'll want to master another language or two before learning Rust. But you'll find that learning Rust pays off generously. The average salary for a Rust developer in the U.S. is $105,000 per year.
Source: ict.gov.ge

Social recommendations and mentions

Based on our record, FastAPI should be more popular than Rust. It has been mentiond 312 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.

FastAPI mentions (312)

  • I Built My First Machine Learning API — Here's Everything I Learned
    I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / 22 days ago
  • Shipping Sovereign SDK: Cryptographic Forensic Receipts and the End of the AI "Prose Tax"
    The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / 3 months ago
  • 5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE
    We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthesize a final answer. We did the obvious thing first: a FastAPI handler that ran the pipeline and streamed progress back to the browser over Server-Sent Events. - Source: dev.to / 4 months ago
  • FastAPI With LangChain and MongoDB
    FastAPI is a Python framework for building APIs quickly, efficiently, and with very little code. - Source: dev.to / 5 months ago
  • I Built A " CrowdSense AI " : A Scalable, Context-Aware Platform for Smart Stadiums
    Backend: Python-based FastAPI for its asynchronous I/O capabilities and rapid JSON serialization. - Source: dev.to / 5 months ago
View more

Rust mentions (53)

  • Deep Atlantic Storage: Rewriting in Rust
    I have been coding in C++, Go, and TypeScript for many years, but recently I started learning the Rust Programming Language. - Source: dev.to / 4 months ago
  • Mathematically Optimal Chunking Strategy
    By considering these goals up-front, we can avoid a ball-of-mud solution that causes fresh headaches for each new edge case raised. After some thinking on possible shapes for such a solution (and admittedly also at least partially to give myself a chance to play with rust and graphs, I developed darn - a tool that aims to use the context inherent in a document’s structure, and an extensible list of weighted user... - Source: dev.to / 4 months ago
  • Rust for Network Programming
    Install Rust: Head over to the official Rust website (rust-lang.org) and follow the instructions to install rustup, the Rust toolchain installer. - Source: dev.to / 7 months ago
  • Game development with SpecKit, Rust and Bevy
    Brkrs is a real, playable Breakout/Arkanoid-style game written in Rust 🦀 using the Bevy engine. It’s also a hands-on learning project, letting you explore:. - Source: dev.to / 9 months ago
  • Handling Smart Contract Errors in Equillar. From Rust to PHP
    Soroban smart contracts, written in Rust, need to communicate errors back to the calling application. These errors must be:. - Source: dev.to / 10 months ago
View more

What are some alternatives?

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

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

Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

Django - The Web framework for perfectionists with deadlines

Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible

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

Haskell - An advanced purely-functional programming language

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