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Add to SafariWhen comparing Sinatra vs Falcon, the Slant community recommends Sinatra for most people. In the question“What are the best web frameworks to create a web REST API?” Sinatra is ranked 18th while Falcon is ranked 25th. The most important reason people chose Sinatra is:
Since it has very few dependencies, the loading time for a Sinatra app is considerably small.
Specs
Question Ranking
Pros
Pro Small loading time
Since it has very few dependencies, the loading time for a Sinatra app is considerably small.
Pro Has only the bare minimum needed
Sinatra has taken an approach of having only the most useful components needed to build applications out of the box. It has simple routes along with a Domain Specific Language over a Rack layer.
Pro Built to build REST APIs
Falcon is designed entirely around building REST APIs. It achieves this helps a lot with it being lightweight and simple. It also helps developers take some design choices which would otherwise not be possible with a more general-purpose framework,
Pro Lightweight with minimal dependencies
Falcon is a very lightweight framework. This can be noticed simply by looking at the dependency list: other than the python standard library, six and mimeparse are the only dependencies.
Pro Performance is really awesome
Cons
Con Hard to scale well
Because it's rather small and minimalistic, scaling up is not very easy with Sinatra. You need a great deal of knowledge on libraries and modules that may be useful for your particular use-case. As your application grows larger it may be hard to keep things clean and minimalistic, losing a lot of the advantages that Sinatra has.
Con Limited in scope
Being designed around building REST APIs and the fact that it's minimalistic with very few dependencies makes Falcon opinionated (you should build a REST API) and limited in scope (you shouldn't be using Falcon to build a news site, blog or ecommerce platform).
