Gain insights into data processing and concurrency in Elixir. Explore GenServer, GenStage, Flow, and Broadway to enhance performance, set up pipelines, and handle increased workloads efficiently.

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Most engineers don’t think that concurrency is distinct from programming. Data processing includes transforming information in some way, like reporting, data aggregation, or analytics. On the other hand, concurrency involves significantly improving performance.

This course is designed to help you navigate the world of concurrency tools available in the Elixir ecosystem. You’ll explore popular modules and libraries like GenServer, GenStage, Flow, and Broadway. You’ll be able to ingest data, set up pipelines, and run concurrent processes with Elixir.

By the end of the course, you’ll have a wide range of new techniques to simplify your product, improve code performance, and make your application more resilient to increased workloads.

Concurrent Data Processing in Elixir

# Ticketing events

We will build an application that processes event messages sent by a legacy ticket booking system. Let’s call our project `tickets`. The legacy system publishes those events to a RabbitMQ message broker. We'll use the messages to perform actions such as creating the ticket in the database and sending an email notification to the customer.

# Create a new `mix` project

Our first task is to set up the project and ensure we have everything installed to test new features locally. We’ve already installed it for you on our platform.

We use the following command to create the project tickets:

```shell
mix new tickets --sup
```

# Dependencies

We need to add `broadway` as a dependency. We also need the `broadway_rabbitmq` producer, which is published as a separate package:


Create a new mix project for a legacy ticket booking system and install some dependencies in it.

Getting Started

Easy Concurrency with the Task Module

Long-Running Processes Using GenServer

Data Processing Pipelines with GenStage

Process Collections with Flow

Data Ingestion Pipelines with Broadway

Concluding the Course

Process Ticketing Events

Ticketing events

Create a new `mix` project