Dropwizard vs Flask

The application can be run and debugged from the IDE without the need to recompile or redeploy the WAR file. This is because a Dropwizard web application creates on main program which starts the jetty container.

Dropwizard comes with application metrics integrated out of the box. These metrics provide a lot of useful information such as request/response time.

For example, to get the execution time of a method, the @Timed annotation is used.

Starting a project with Dropwizard si very easy and bootstraping is quick and painless. All that's needed is a single dependency added in the pom.xml file and it's ready to go.

Flask is very easy to get up and going, with vanilla HTML or with bootstrap pieces. It doesn't take much lines of Python to load Flask to get headers working, etc, and since it's all modular you don't have to have something you don't want in your application.

Flask is one of the most popular Python web frameworks, if not the most popular one. As such, there's plenty of guides, tutorials, and libraries available for it. A large number of important Python libraries, such as SQLAlchemy have libraries for Flask, which add valuable bindings to make the development process and the integration between these libraries and Flask as easy as possible.

Even though it's pretty minimalistic out of the box, Flask still provides the necessary tools to build a quick prototype for a web app right after a fresh install. With all the main components pretty much packed in the flask package, building a simple web app in a single Python file is as easy as it gets.

Flask gives developers a lot of flexibility in how they develop their web applications.

For example, the choice of not having an ORM, but instead choosing one suited to the task, or another area where Flask gives a lot of options to developers is the templating. They can use Jinja2, Flask's default templating language or choose from a number of different templating languages they desire.

The official documentation is very thorough and complete. Everything is explained in-depth and followed by extremely well-explained tutorials that tackle real-world problems.