The CP Subsystem module of Hazelcast IMDG 3.12 offers linearizable and
distributed implementations of the Java concurrency primitives; Lock,
Semaphore,CountDownLatch, AtomicReference, and AtomicLong. This repo
contains a couple of code samples to demonstrate how to use them for
distributed coordination use cases.
We use a simple deployment model in the use-cases. We deploy a cluster of 3 Hazelcast servers with the CP Subsystem enabled. The cluster works like a central distributed coordination service. Then, we connect to the Hazelcast cluster via multiple Hazelcast clients.
Each use-case is implemented as a Maven submodule, except the server
submodule, which contains common utilities for the use-cases. We also provide
a set of scripts to start and terminate Hazelcast servers and clients. Last,
each use-case creates multiple Hazelcast server and client instances, but all
of their logs are printed into a single log.txt file in the project root
directory to help you track the progress easily.
Make sure to hit mvn clean install in the project root directory before
running the code samples.