Gain insights into Python's scalability, concurrency, and distribution. Learn about CPU scaling, event loops, queue-based distribution, and building REST APIs to optimize and deploy high-performance applications.

python.tar.gz

Chapter2

Chapter7

Chapter5

Chapter6

Chapter3

Chapter7-without-etcd

Chapter8-with-etcd

Chapter9

Chapter9-gabbi

Chapter10-heroku

Chapter10-aws_eb

Chapter11_Tox_integration

Chapter11_Tox_integration-pifpaf

Chapter11_pifpaf_fixtures

Chapter12_caching

Chapter13_Performance

Chapter13_Performace_KCacheGrind

Chapter5-rq-dashboard

Chapter5-celery-flower

Chapter10-gcloud

Chapter2-zsh

Chapter13_Performace_KCacheGrind-copy

Chapter11_Tox_integration-pifpaf-postgresql

Celery-Project1_Sol

Celery-Project1_Sol2

Python, in all of its greatness, is often dismissed when needing to write performant and distributed applications. It’s considered to be slow and not suited for the task. In this course, you will find that with the right implementation of Python, you can write applications that scale horizontally, perform well, and are distributed. 

To kick things off, you’ll learn about CPU scaling, concurrency, and event loops, all of which are crucial for implementing a distributed system. After that, you’ll move on to queue-based distribution, lock management, and group memberships, which are fundamental concepts for maintaining availability and consistency in distributed applications.

In the last half, you’ll learn how to build a REST API, how to deploy your app to a PaaS, and how to optimize your application's performance.

By the end of this course, you’ll be more productive with Python, you’ll be able to write faster applications that are distributed, and you’ll have a great new skill that is highly coveted.

The Hacker's Guide to Scaling Python

# Problem

You have implemented a flask-based REST API server that stores a variable `serverData`. The contents of this data do not change very frequently so you want to enable caching using `ETag`. The server code given below works fine without using caching and returns the content every time, even when it is not changed.

Your task is to implement `ETag` in the following server so that it sends `304 Not Modified` on every `GET` request if the `ETag` provided is not updated. However, it should send the updated value otherwise and send the new `Etag` to the clients.

After implementing `Etag` functionality, run `http GET http://127.0.0.1:5000 If-None-Match:"<your_etag>"` to see the `304 Not Modified` response. Try to change the `serverData` using `PUT` and then check if it returns updated content.

> To run the following application, run the command `python etag-test.py`. It will start the flask-based HTTP server. Then, open another terminal, and contact the server using command `http HEAD http://127.0.0.1:5000`. Run `http PUT http://127.0.0.1:5000 serverData="New data"` to update the `serverData` variable.

Test yourself on building a REST API by solving the challenge in this lesson.

Coding Challenge: Building REST API

Scaling

CPU Scaling

Event Loops

Functional Programming

Queue-Based Distribution

Designing for Failure

Create a Web Crawler

Project Walkthrough

Lock Management

Group Membership

REST Interfaces

Deploying on PaaS

Testing Distributed Systems

Caching

Performance

Conclusion

Coding Challenge: Building REST API

Problem