Erlang Concurrency: Building and Testing a Stateful Cache

Building reliable, high-concurrency systems requires more than just standard unit tests. In Erlang, managing state and ensuring thread safety is critical for application stability. This text-based course guides you through the process of implementing a robust concurrent cache and proving its correctness under load. You will transition from understanding basic actor-model concepts to writing automated stateful property tests that uncover complex concurrency bugs. In this course, you will learn to: 1. Understand the fundamentals of Erlang's OTP framework and the gen_server behavior. 2. Implement a concurrent cache using Erlang Term Storage (ETS) for high-performance data retrieval. 3. Configure modern ETS concurrency options to optimize read and write operations safely. 4. Design stateful property-based tests to model and verify system behavior under concurrent conditions. 5. Analyze and debug race conditions and state mismatches using structured test outputs. You will begin by mastering core concurrency concepts and Erlang syntax foundations. From there, you will progress through building the cache step-by-step before diving into modern property-based testing frameworks to validate your implementation. This course is designed for backend developers and software engineers new to Erlang, OTP, or property-based testing, with no prior concurrent programming experience required. Start reading today to master concurrent state management and automated testing in Erlang.