Book Image

Building Python Microservices with FastAPI

By : Sherwin John C. Tragura
3 (2)
Book Image

Building Python Microservices with FastAPI

3 (2)
By: Sherwin John C. Tragura

Overview of this book

FastAPI is an Asynchronous Server Gateway Interface (ASGI)-based framework that can help build modern, manageable, and fast microservices. Because of its asynchronous core platform, this ASGI-based framework provides the best option when it comes to performance, reliability, and scalability over the WSGI-based Django and Flask. When working with Python, Flask, and Django microservices, you’ll be able to put your knowledge to work with this practical guide to building seamlessly manageable and fast microservices. You’ll begin by understanding the background of FastAPI and learning how to install, configure, and use FastAPI to decompose business units. You’ll explore a unique and asynchronous REST API framework that can provide a better option when it comes to building microservices. After that, this book will guide you on how to apply and translate microservices design patterns in building various microservices applications and RESTful APIs using the FastAPI framework. By the end of this microservices book, you’ll be able to understand, build, deploy, test, and experiment with microservices and their components using the FastAPI framework.
Table of Contents (17 chapters)
1
Part 1: Application-Related Architectural Concepts for FastAPI microservice development
6
Part 2: Data-Centric and Communication-Focused Microservices Concerns and Issues
11
Part 3: Infrastructure-Related Issues, Numerical and Symbolic Computations, and Testing Microservices

Creating CRUD transactions using MongoFrames

If you are tired of using complicated and heavy-loaded ODMs, then MongoFrames is ideal for your requirements. MongoFrames is one of the newest ODMs and is very convenient to use, especially when building a new repository layer for an already existing complex and legacy FastAPI microservice application. But this mapper can only create synchronous and standard types of CRUD transactions.

But before we proceed, let us install the extension module using pip:

pip install MongoFrames

Creating the database connection

The MongoFrames platform runs on top of PyMongo, which is why it cannot build an asynchronous repository layer. To create the database connection, it uses the MongoClient API class from the pymongo module, with the database URL in string format. Unlike in the other ODMs, where we create a client variable, in this mapper, we access the variable _client class from the Frame API class to refer to the client connection object...