Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff. Update 3 (Sept 22, 2014):Rewrote the golang version using no external dependency. Both Express and Flask are very popular and powerful technologies for web development. Blueprints are a useful tool to help developers, but they require some additional reading and may be a bit tricky for beginners. After wiring all of this up and POSTing a few new quests, the front end site started populating with data: The process of setting up the Express API was not without its hair pulling, however. It takes just a few lines of Python to load Flask, and because it is modular, you can restrict the dependencies to suit your needs. If you're a C# developer and willing to spend the time to learn the most arcane details of C# coding best practices, consider using ASP.NET. I took a cursory look at Django, since I'd been hearing about it as a powerhouse back end framework that provides everything out of the box. However, one can easily reduce this minor difference by maintaining good coding practices and investing in decent hardware resources. Being a primarily front end and 2D game developer, I've become intimately familiar with how dispersed the JavaScript ecosystem can feel. More than 30,000 websites on the internet use Flask. Express and Flask are well-known and capable web development frameworks. Compared to the opinionated Django framework, Flask is more flexible to different working styles and approaches to web app development. Flask comes with options like template engines such as ORM, caching, and authentication. With innumerable HTTP utility approaches and middleware at disposal, making a dynamic API is easy and quick.Numerous popular web frameworks are constructed on this framework. All of the three technologies didnt consume much memory during the tests. Python is extensively used as a server-side language. More on that later. The latency of code execution is a critical aspect of a website. Use Cases Designs For Django vs Flask Let's see how Flask and FastAPI compare on various factors and features and which to choose when. I had heard of the "MEVN Stack," which denotes a full stack application that is comprised of MongoDB, Express, Vue, and NodeJS, and decided to try that out for this iteration of the project. The former I've mentioned in this article a couple of times already, but it's worth discussing again to understand the scope of building a full stack app on your machine. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Buy it, use it, break it, fix it, trash it, change it, mail, upgrade it. Express.js is ranked 3rd while Flask is ranked 4th. Flask is more user-friendly, providing an intuitive and concise API that makes it simpler to get started. Tweet a thanks, Learn to code for free. Following are some of the pros and cons of Express and Flask. The following are some Express limitations that can make it less effective than Flask. Express is used on nearly 27,000 websites. Not beginner-friendlydocumentation. If you're working with Express, you'll most likely use Mongoose as an ODM - basically like a "middle person" that translates a model of what your data looks like to the database. Flask isnot suited for small projects; if youre creating apersonal siteon which very few visitors will come then dont use Flask. Flask is a Python web microframework, officially launched in 2010 as an open source web development framework. There are quite some differences between Express and Flask that make them differ from each other. ExpressJS and Flask are two very popular frameworks, and sometimes deciding which to use can be particularly challengingespecially if youre a beginner and wondering where to start. Key features: Express can easily create RESTful APIs, and it also offers support for a wide range of databases, including MongoDB, MySQL, and PostgreSQL. It seems that React with 132K GitHub stars and 24.5K forks on GitHub has more adoption than Flask with 45.2K GitHub stars and 12.7K GitHub forks. Express is built with Node.js. Flask was easy enough for me as a non-Python developer to pick up and build something over a weekend. Flask and Express are two popular frameworks. Now I got more than 63300 Requests/sec! It also has the full support of Microsoft and an open source community. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as developers. A monolithic framework, Express.js. For instance, if you need a fast website with decent functionalities then you should go with Express. When comparing Flask vs ASP.NET Core, the Slant community recommends Flask for most people. If you enjoyed this article, please consider checking out my games and books, subscribing to my YouTube channel, or joining the Entromancy Discord. So I created a web service that calculates the corresponding fibonacci number to a request parameter. It performs 100 times better than Flask in any given situation. If you need raw computing performance for the web Golang might be for you. FastAPI can also be considered a better option due to its auto scaling feature. And then there's code, you can gain a few . With optimized database access you can gain 100ms here and there. You can reduce the load time by several seconds at this level. Thx for this input. Setting up a large project: Setting up a large project with Flask is not easy. It is single-threaded, asynchronous and event-driven. Express is a minimal and flexible Node.js web framework providing the core resources and tools required to build web applications. Hopefully, my explanation of the process has been helpful in your own search for a back end framework, but here are some additional recommendations just in case: Additionally, two things bear mentioning that threw me for a spin in this process: CORS and environment variables. I quite like how clean the code is and the ability to structure my projects as I see fit, but troubleshooting and error handling do leave a lot to be desired. To integrate this into your application, you can simply add the following couple of lines in your code: from werkzeug.middleware.profiler import ProfilerMiddleware app.wsgi_app = ProfilerMiddleware (app.wsgi_app, profile_dir= "/path/to/profiles") CCNA vs CCNP: Which Certification is Better? But if speed isnt a concern for you and you only need the features of Python, and a lightweight framework, then Flask will be a better choice. This frustration was magnified in attempting to build a back end app. Following are some of the main differences between Express and Flask that will help you decide better which one is better for you. Your IP: If you're new to web development, you might be asking, "what's an API?". Each quest has a "name" and a "description," both of which are displayed in the web browser. Frederick Plange is a computer science major at Ashesi University, one of the top universities in Ghana aiming to develop ethical and entrepreneurial leaders to transform the nation. we know that python famous for fewer lines of code so it's fast. It's easy to work with and will teach you the basics that you'll need to know for building web apps in any coding language. If you read this far, tweet to the author to show them you care. So if you're looking at developing enterprise-level applications that need to scale, you might want to take a longer look at ASP.NET as a potential solution. Express is written in JavaScript; on the other hand, Flask is made using Python. Flask provides configuration and conventions, with sensible defaults, to get started. FastAPI: It is a modern framework that allows us to build API seamlessly without much effort and time. Ad Specs License MIT Written in JavaScript Initial release November 16, 2010 This website is using a security service to protect itself from online attacks. What are the Main Differences Between Express and Flask? 14. I thought my findings might prove useful to others out there who are researching back end frameworks for small projects. Database The Postgresql sample database is used to give the apps something to act against in a CRUD manner. This gave me the idea of trying out non-JavaScript frameworks to see if they were better suited for my app. For each framework, I created an API endpoint that returns 100 rows of data from a PostgreSQL database. Minimalistic: Flask is a lightweight framework with few dependencies. Setting up a large project: Setting up a large project with Flask is not easy. They frequently make use of features that are not available on other platforms since they are built to run on a particular platform (Node.js) and operating system (Linux). We also have thousands of freeCodeCamp study groups around the world. The following is a snippet from /routes/quests.js, for example, which handles the HTTP endpoint requests: The general theme of the code is to receive a request, attempt to contact the database to do work, and then send a response back to whoever's asking. Cons Of Flask Less popularand less communitysupport. I used it to make HTTP requests to each of the APIs to make sure they were working properly before layering on the Vue client and trying to get the whole stack running altogether. Learn on the go with our new app. Programmers with more coding experience or who need more control of the app design prefer Flask for this reason. Yet, as you can probably tell from the complex file structure, there's so much code that surrounds these snippets, along with Interfaces, Dependency Injection, and other abstractions, that it can be challenging to understand how it all works together. Its getting harder and harder to pick a framework to develop web applications with. Most frameworks require you to install an additional package to get the whole thing running in your local environment. Let us know in the comments. What?? Django is a web development framework for Python. Using the Vue CLI to serve the client on http://localhost:8080, the front end of the app looks like this in action: Once quests are added to the database, they'll start appearing in between the "RPG Quests" header and the input fields. Node + Express and PyPy + Twisted are also not slow. This post will help the beginner decide which framework is right for them. PHP is less secure. But I certainly feel like my time spent learning the ins-and-outs of ASP.NET could be better utilized towards mastering another framework. https://github.com/mitsuhiko/flask/issues/1512#issuecomment-114454800, Update 4 (Jan 10, 2015):I added the sourcecode to a github repo: https://github.com/tschundeee/fibonacci-web-lang-benchmark. Being most comfortable in JavaScript, I was excited by the prospect of having the entire stack run on just one language instead of several. Both packages allow you to configure things like where your database lives, or what default port your application should be using, in one document. Because Express is written inJavaScriptand Django inPython, and because JavaScript is much quicker than Python,Express is also fasterthan Flask thanks to theChrome V8 Engine. Golang is the fastest again after setting GOMAXPROCS to 7 (7 out of 8 because 1 is reserved for wrk). At least this is the case on my System. Beyond Flask itself, look for community-maintained extensions to add even more functionality. Express is a Node.js package for web development written in JavaScript. You can add packages to improve functionality as you fancy, which I found to be a double-edged sword as a newbie to the framework. First, there is the possibility to build a schema that is used to do input and output validation. Flask is a single-flow web app development framework and unlike Node.js processes requests more slowly. It's free to sign up and bid on jobs. In front end development, I'm most comfortable using Vue, and used the Vue CLI to scaffold a basic client, with the following file structure: I replaced the boilerplate markup provided by the Vue CLI with the following: If you're not familiar with Vue, the specifics of the front end aren't that important! Here I chose Gorilla Pat because it is small and for this test I dont need additional stuff like subrouting, subdomains, etc. While it does offer a similar response time, it's not worth it for the price of complicating code that could be simple - The quality of code isn't increased by the complexity or the number of lines we use. Update 4 (Jan 10, 2015): I FastAPI on the other hand implements the ASGI specification. So lets start with what Express and Flask are. The way a framework helps any developer may vary from one to another. UPDATE: Flask is fast now using meinheld + gunicorn. Flask and React are both open source tools. app.get("/:number", function (req, res) {, func IndexHandler(w http.ResponseWriter, r *http.Request) {, wrk -c 64 -d 30s http://localhost:PORT/10, 1c. Comparison Table: Express vs Flask. The whole thing - the front end "client", the back end "API" or server, and the database - is called a "stack," or more precisely, the "full stack." Node.js vs Python: The Differences. 15. Simplicity: As a minimalistic framework, Flask provides the necessary tools to easily and quickly build a web app prototype after installation. Your application then uses that document at runtime to figure out where to find everything, without any further configuration needed from you. To get started with Express, click. The HTTP request code that's most analogous to the Express API is located in /app/routes.py: Similarly, the database model (akin to the Mongoose "schema") is in /app/models.py: As I mentioned, I'm more familiar with JavaScript and C# than with Python, and working with the latter to build the Flask API felt like cheating. Express is a minimal and flexible Node.js web framework providing the core resources and tools required to build web applications. We would like to remind you that these measures are in addition to the 6 golden rules: The file structure for this version of the API was more complex than the others, given that .NET projects tend to have a much larger footprint: I should also mention that I already had Visual Studio and all of the required workloads installed, which made the setup process easier. While Flask is a web development framework written in Python. It is inspired from Hapi and Express and as far as we know, it is one of the fastest web frameworks in town. The following are some of Express and Flasks interesting statistics: Theres no definite answer to this question, but it depends on your needs which one you should choose. On sale 7 days a week from from 12:30 to 17:30. Easy to learn and use. Features of Flask Provides development server and debugger. A request to for example http://localhost:3000/10 calculates fib(10) and returns the result (55 in this case) as plain text. The model in this app (called a "schema" in Mongoose terms) is really simple, located in /models/quests.js: The above indicates that the database should store our two fields: a quest name and a quest description. As Flask is developed for WSGI services like Gunicorn, it doesn't offer native async support. Moreover, Django comes equipped with features that promote rapid development. Flask also offers more options for templating, including Jinja2, Mako, and Genshi. 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