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Clojure Functional Programming & JVM Backend Development · Lesson

Refs, Agents, Atoms for State

Learn to use Clojure's core concurrency primitives for managing mutable state safely across threads.

Concurrency & State Intro

Managing state in concurrent programs is tricky! When multiple parts of your code try to change the same data at once, you can run into big problems like data corruption or deadlocks.

Clojure offers powerful tools to handle shared mutable state safely and efficiently.

Clojure's State Philosophy

Clojure embraces immutability by default. This means data structures don't change after creation. But what about when you genuinely need to change something, like a counter or a user's balance?

  • Clojure provides special concurrency primitives.
  • These primitives manage mutable state in a controlled way.
  • They ensure changes are safe, even across multiple threads.

All lessons in this course

  1. Refs, Agents, Atoms for State
  2. Software Transactional Memory (STM)
  3. Promises, Futures & Async Operations
  4. core.async Channels and Go Blocks
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