Flask vs FastAPI: Key Differences
Aspects |
Flask |
FastAPI |
---|---|---|
Performance |
Good for medium-sized applications but slow for complex applications. |
Faster and better than Flask. |
Use Case |
Web applications |
APIs |
HTTP Methods |
@app.route(“/”, methods = [“GET”]) |
@app.get(“/”) |
Data Validation |
No validation support. |
In-built data validation. |
Error Message Display |
Displayed in HTML format. |
Displayed in JSON format. |
Documentation Support |
Supports manual documentation. |
Supports automatic documentation. |
Asynchronous tasks |
Not inherent to the asynchronous design. |
Inherent to the asynchronous design. |
Community |
Large community. |
Smaller community. |
Flask vs. FastAPI: Which One to Choose
Let’s understand the difference between Flask and FastAPI using a real-world analogy. Imagine you are hosting a party where Flask and FastAPI are the two methods using which you serve your guests. Flask is like a buffet-style approach where all the options are laid on the table and each individual chooses the service they want to use. Your role is to prepare the food or the backend logic for the application and serve it and then it is up to the guests or the clients how they wish to interact with them.
On the other hand, FastAPI is like a catering service where you provide a menu of options and guests place their orders. FastAPI or the catering service takes care of all the behind-the-scenes tasks and ensures to provide a fast and efficient experience to the clients. In this article, we’ll discuss the differences between Flask and FastAPI and which one to choose, leaving the choice to the user to decide which framework suits them for their application needs.
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