1. What is this repo about?
2. How to run this code
3. Wannna build real-world ML products?

This repository shows how to

• fetch real-time trade data (aka raw data) from the Coinbase Websocket API
• transform trade data into OHLC data (aka features) in real-time using Bytewax, and
• store these features in a serverless Feature Store like Hopsworks.

This repository is a natural continuation of this previous project where we built a Streamlit app with real-time feature engineering, but lacked state persistence: after each re-load of the Streamlit app, we lost all features generated up to that point.

In this project we add state to our system through a a Feature Store. We use Hopsworks because

• it is serverless, so we do not need to handle infrastructure
• it has a very generous free tier, with up to 25GB of free storage.

1. Create a Python virtual environment with the project dependencies with

   $ make init
   

2. Set your Hopsworks project name and API key as environment variables by running the following script (to generate these head to hopsworks.ai, create a free account, create a project and generate an API key for free)

   $ . ./set_environment_variables.sh
   

3. To run the feature pipeline locally

   $ make run
   

4. To deploy the feature pipeline on an AWS EC2 instance you first need to have an AWS account and the aws-cli tool installed in your local system. Then run the following command to deploy your feature pipeline on an EC2 instance

   $ make deploy
   

5. Feature pipeline logs are send to AWS CloudWatch. Run the following command to grab the URL where you can see the logs.

   $ make list
   

6. To shutdown the feature pipeline on AWS and free resources run

   $ make delete
   

ℹ️ Implementation details

• We use Bytewax as our stream-processing engine and the waxctl command line tool to deploy our dataflow to EC2.

• If you want to deploy the pipeline to a Kubernetes cluster, you will need to adjust the arguments passed to waxctl in the Makefile. Check the documentation here to learn how.

Check the Real-World ML Program, a hands-on, 3-hour course where you will learn how to design, build, deploy, and monitor complete ML products.