👨‍💻 Functional Programming with Erlang-Erlang Functional Programming Guide

Example

Creating a chat server that can handle multiple user connections simultaneously.

Scenario

In a chat application, Erlang's process model is used to spawn a new lightweight process for each user connection. This allows the server to manage thousands of concurrent connections efficiently, with each process handling messages from its respective user.

Example

Automatically restarting a failed service component without affecting the rest of the system.

Scenario

Using Erlang's supervisor trees, a hierarchical structure of processes is created where supervisor processes monitor worker processes. If a worker process fails, its supervisor can restart it, ensuring the system continues to operate smoothly. This is particularly useful in telecom systems where service continuity is critical.

Example

Processing and aggregating live data streams from IoT devices.

Scenario

Erlang's ability to handle numerous concurrent processes makes it suitable for collecting and processing data from thousands of IoT devices in real-time. The functional programming model ensures that data processing is done in a clean, side-effect-free manner, allowing for accurate and reliable data aggregation.