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

Applying session management

Session management is a feature used for managing requests and responses created by a user’s access to an application. It is also about creating and sharing data across a user session. Many frameworks usually include session handling features in their security plugins but not FastAPI. Creating user sessions and storing session data are two separate programming concerns in FastAPI. We use a JWT to establish a user session and Starlette’s SessionMiddleware to create and retrieve session data. Creating user sessions and storing session data are two entirely different programming solutions in FastAPI. We use JWT to establish a user session and Starlette’s SessionMiddleware to create and retrieve session data.

Creating user sessions

We have already proven the importance of JWT when it comes to securing FastAPI microservice applications in Chapter 7, Securing the REST APIs. However, here, the JWT is applied to create a session based...