Clojure: High Performance JVM Programming

Summary

We have checked the core Clojure mechanisms for concurrent programming, as you can see, they feel natural and they build on already existing paradigms, such as immutability. The most important idea is what an identity and value is; we now know that we can have the following values as identifiers:

• Refs
• Atoms
• Agents

We can also get the snapshot of their value with the defer function or the @ shortcut.

If we want to use something a little more primitive, we can use promises or futures.

We have also seen how to use threads, or Pulsar's fibers. Most of Clojure's primitives aren't specific to some concurrency mechanism, so we can use any parallel programming mechanism with any type of Clojure primitive.