Compare Bottle and FastAPI

Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library.

Fast API is a high-performance web framework for building web applications with Python 3.6+ based on standard Python type hints. It is designed to be high performance and easy to learn.

Let's see how Bottle and FastAPI compare on various factors and features and which to choose when.

Bottle

FastAPI

Overall

Type

Type
Python microframework for building web applications.
Type
Minimalistic framework based on starlette and pydantic for building fast web applications using async IO.

Author

Release Date

Release Date
2009
Release Date
2018

License

License
License

Website

Website
Adoption and Ease of Use

Popularity [?]

Popularity [?]
0.5 Star
Used by 11,000 projects.
Popularity [?]
New addition to the Python web frameworks family but its popularity is on the rise.

Used by

Used by
No data.
Used by
Uber (internal use,) Explosion AI, Microsoft (internal use)

Jobs [?]

Jobs [?]
0.5 Star
74 job openings which list Bottle as a requirement.
Jobs [?]
0.5 Star
5 job openings which list Fast API as a requirement.

Performance [?]

Performance [?]
5 Stars
Very fast. Extensions could impact performance adversely.
Performance [?]
5 Stars
High performance.

Flexibility

Flexibility
5 Stars
Very flexible and extremely simple. Doesn't force anything on developers.
Flexibility
5 Stars
Fast API is flexible to code and doesn't restrict users to a particular project or code layout.

Ease of Learning

Ease of Learning
5 Stars
Straightforward and easy to learn. It has a good amount of tutorials online.
Ease of Learning
4.5 Stars
Easy to learn especially for people who are new to web development. However, it doesn't have a large number of online resources, courses and tutorials.
Database Support

RDBMS Support

RDBMS Support
Through Plugins or Extensions
Through Plugins or Extensions
No built-in ORM framework. Leaves it up to developers to choose a library like SQLAlchemy or extensions such as Macaron.
RDBMS Support
Through Plugins or Extensions
Through Plugins or Extensions
FastAPI doesn't come with built in ORM, however is compatible with SQLAlchemy, Pydantic ORM mode.

NoSQL Support

NoSQL Support
No built-in support but 3rd party Python libraries like PyMongo or Bottle-Mongo can be used to talk to NoSQL databases.
NoSQL Support
Fast API supports many NoSQL databases like MongoDb, ElasticSearch, Cassandra, CouchDB and ArangoDB. Read more here.
Web & Core Features

Admin Dashboard

Admin Dashboard
Through Plugins or Extensions
Through Plugins or Extensions
No built-in admin panel.
Admin Dashboard
Built-in Support
Built-in
Yes, uses Swagger as an API documentation web user interface.

REST Support

REST Support
No built-in support but can be implemented easily.
REST Support
Yes, allows developers to build REST APIs quickly.

Security

Security
No built-in protection. Bottle is a minimalist framework. Must be handled by developers themselves or by using 3rd party extensions.
Security
FastAPI provides several tools for many security schemes in the fastapi.security module. Not enough data.

Templating Library

Templating Library
Fast and pythonic built-in template engine and support for mako, jinja2 and cheetah templating languages.
Templating Library
FastAPI supports Jinja2 for templating and also supports aiofiles for serving static files

Web Forms

Web Forms
No built-in support.
Web Forms
Ships with it's own Forms, with basic features.

Authentication

Authentication
Using a plugin such as Bottle-Cork
Authentication
Fast API supports OAuth2, JWT and simple HTTP authentiation.

Testing

Testing
Using WebTest and Nose.
Testing

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