concurrent-collections

This project contains a concurrent hash map which is optimized for the method computeIfAbsent. The algorithm is described in this blog post. A benchmark is available here. And you can find the Java doc here.

Download

Use the following dependency for maven:

<dependency>
  <groupId>com.vmlens</groupId>
  <artifactId>concurrent-collections</artifactId>
  <version>1.0.0</version>
</dependency>

You can download the binaries from maven central here