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Flask
Flask

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4.2K
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Spring

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Flask vs Spring: What are the differences?

What is Flask? a microframework for Python based on Werkzeug, Jinja 2 and good intentions. Flask is intended for getting started very quickly and was developed with best intentions in mind.

What is Spring? Provides a comprehensive programming and configuration model for modern Java-based enterprise applications. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.

Flask and Spring are primarily classified as "Microframeworks (Backend)" and "Frameworks (Full Stack)" tools respectively.

"Lightweight", "Python" and "Minimal" are the key factors why developers consider Flask; whereas "Java", "Open source" and "Great community" are the primary reasons why Spring is favored.

Flask and Spring are both open source tools. Flask with 45.2K GitHub stars and 12.7K forks on GitHub appears to be more popular than Spring with 30.6K GitHub stars and 19.6K GitHub forks.

According to the StackShare community, Flask has a broader approval, being mentioned in 511 company stacks & 531 developers stacks; compared to Spring, which is listed in 319 company stacks and 184 developer stacks.

What is Flask?

Flask is intended for getting started very quickly and was developed with best intentions in mind.

What is Spring?

A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
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What are some alternatives to Flask and Spring?
Django
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Tornado
By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.
ExpressJS
Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
Node.js
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
React
Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
See all alternatives
Decisions about Flask and Spring
Pierre Chapuis
Pierre Chapuis
at Pierre Chapuis ยท | 5 upvotes ยท 78.5K views
atChilliChilli
Flask
Flask
Hug
Hug
SQLAlchemy
SQLAlchemy
Python
Python
Gunicorn
Gunicorn

Unlike our frontend, we chose Flask, a microframework, for our backend. We use it with Python 3 and Gunicorn.

One of the reasons was that I have significant experience with this framework. However, it also was a rather straightforward choice given that our backend almost only serves REST APIs, and that most of the work is talking to the database with SQLAlchemy .

We could have gone with something like Hug but it is kind of early. We might revisit that decision for new services later on.

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Praveen Mooli
Praveen Mooli
Engineering Manager at Taylor and Francis ยท | 12 upvotes ยท 532.8K views
MongoDB Atlas
MongoDB Atlas
Java
Java
Spring Boot
Spring Boot
Node.js
Node.js
ExpressJS
ExpressJS
Python
Python
Flask
Flask
Amazon Kinesis
Amazon Kinesis
Amazon Kinesis Firehose
Amazon Kinesis Firehose
Amazon SNS
Amazon SNS
Amazon SQS
Amazon SQS
AWS Lambda
AWS Lambda
Angular 2
Angular 2
RxJS
RxJS
GitHub
GitHub
Travis CI
Travis CI
Terraform
Terraform
Docker
Docker
Serverless
Serverless
Amazon RDS
Amazon RDS
Amazon DynamoDB
Amazon DynamoDB
Amazon S3
Amazon S3
#Backend
#Microservices
#Eventsourcingframework
#Webapps
#Devops
#Data

We are in the process of building a modern content platform to deliver our content through various channels. We decided to go with Microservices architecture as we wanted scale. Microservice architecture style is an approach to developing an application as a suite of small independently deployable services built around specific business capabilities. You can gain modularity, extensive parallelism and cost-effective scaling by deploying services across many distributed servers. Microservices modularity facilitates independent updates/deployments, and helps to avoid single point of failure, which can help prevent large-scale outages. We also decided to use Event Driven Architecture pattern which is a popular distributed asynchronous architecture pattern used to produce highly scalable applications. The event-driven architecture is made up of highly decoupled, single-purpose event processing components that asynchronously receive and process events.

To build our #Backend capabilities we decided to use the following: 1. #Microservices - Java with Spring Boot , Node.js with ExpressJS and Python with Flask 2. #Eventsourcingframework - Amazon Kinesis , Amazon Kinesis Firehose , Amazon SNS , Amazon SQS, AWS Lambda 3. #Data - Amazon RDS , Amazon DynamoDB , Amazon S3 , MongoDB Atlas

To build #Webapps we decided to use Angular 2 with RxJS

#Devops - GitHub , Travis CI , Terraform , Docker , Serverless

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Interest over time
Reviews of Flask and Spring
Avatar of mjhea0
Software Engineer at TestDriven Labs
Review ofFlaskFlask

Flask is a light, yet powerful Python web framework perfect for quickly building smaller web applications. It's a "micro-framework" that's easy to learn and simple to use, so it's perfect for those new to web development as well as those looking to rapidly develop a web application.

How developers use Flask and Spring
Avatar of datapile
datapile uses SpringSpring

Spring is another gift rained down by the gods of Open Source Software (a.k.a. Pivotal Labs in this particular case) that just makes sense on all levels.

From Spring Boot, to SpringMVC, the configuration architecture & profile paradigm, Spring Cloud expandability, to the ease with which one can deploy Spring applets as microservices within Docker is an absolute joy.

Avatar of Jack Littleton
Jack Littleton uses FlaskFlask

I use Flask for times when I need to create a REST API that interfaces with other Python code, or there is no specific reason why I'd want to use Node.JS. I prefer Flask because of its small learning curve, allowing me to get started coding as quickly as possible

Avatar of Cloudify
Cloudify uses FlaskFlask

This lightweight web framework enables quick REST API development while enabling easy clustering, and the usage of multiple worker processes required to scale the REST API service to meet high volume requirements.

Avatar of Giovanni Candido da Silva
Giovanni Candido da Silva uses SpringSpring

The core of the application use Spring Stack, to provide services and structure like:

  • Persistence
  • REST
  • Email
  • Security
  • Self contained application with spring boot
  • And many others.
Avatar of Kang Hyeon Ku
Kang Hyeon Ku uses SpringSpring

๊ทธ๋ƒฅ ๊ฐ„๋‹จํ•œ MVC ์›น ํ”„๋ ˆ์ž„ ์›Œํฌ ์ธ์ค„ ์•Œ์•˜๋Š”๋ฐ ์ •๋ง ๋ชจ๋“ˆํ™”๊ฐ€ ์ž˜ ๋˜์žˆ๊ณ , ์‚ฌ์šฉํ•˜๋‹ค๋ณด๋ฉด ๊ฐœ๋ฐœ์ž์—๊ฒŒ ์ •๋ง ํŽธ๋ฆฌํ•˜๊ฒŒ ๋งŒ๋“ค์–ด ๋†“์•˜๋‹ค. vaildation ๋ถ€๋ถ„์€ ๋”ฐ๋กœ ์ฒ˜๋ฆฌ ํ•  ์ˆ˜ ์žˆ๊ณ , ํŒŒ๋ผ๋ฏธํ„ฐ ๋‹ด๋Š” ๋ณ€์ˆ˜์™€ ๋””ํดํŠธ ๊ฐ’์„ ์ธ์ž๋กœ ์„ค์ •ํ•ด ์ฃผ๋Š” ๋ถ€๋ถ„๋„ ์ฐธ ์ข‹์€ ๊ฒƒ ๊ฐ™๋‹ค. ๋˜ spring-data ๋Š” jpa ํ™œ์šฉํ•ด ๋น ๋ฅด๊ฒŒ ๊ฐœ๋ฐœํ•˜๋Š”๋ฐ ์œ ์šฉํ•˜๋‹ค.

Avatar of ByeongGi
ByeongGi uses SpringSpring
  • SpringFramework ์ค‘ MVC , AOP ๋“ฑ์˜ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋ฅผ ํ™œ์šฉํ•˜์—ฌ ์›น ์–ดํ”Œ๋ฆฌ์ผ€์ด์…˜ ํ”„๋กœ์ ํŠธ ๊ตฌ์„ฑ
  • ๊ณตํ†ต ๋กœ์ง ๊ตฌํ˜„ ๋ฐ ๋ณด์•ˆ ์ฒ˜๋ฆฌ ๊ฐ€๋Šฅ

  • Spring5์—์„œ ์ง€์›ํ•˜๋Š” ํ•จ์ˆ˜ํ˜• ํ”„๋กœ๊ทธ๋ž˜๋ฐ ๊ฒฝํ—˜ ์žˆ์Œ

Avatar of Sail Tactics
Sail Tactics uses FlaskFlask

Service to query NOAA weather forecasts data and service to build tidal current forecast maps using AWS EC2 and Geoserver

Avatar of Ralic Lo
Ralic Lo uses SpringSpring

Used Spring Boot and its ORM to interacting with database server for web application development.

Avatar of OnlineCity
OnlineCity uses FlaskFlask

Flask drives our APIs, both the Website APIs and the majority of the REST Messaging APIs

Avatar of papaver
papaver uses FlaskFlask

used flask for a few personal projects. enjoyed its simplicity and ease of use.

How much does Flask cost?
How much does Spring cost?
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