Java engineer. I build libraries small enough to read end to end in one sitting, and write about the layer underneath the API you are calling.

Libraries

java-concurrency-patterns Concurrency examples that are measured, not asserted. Every performance claim has a benchmark behind it, every antipattern has a test that catches it failing, and the memory model section proves its point with jcstress instead of prose.

evictor Thirteen cache eviction policies behind one interface, with a harness that measures them against each other on the same traffic. Open it when you want to know what LRU is costing you.

reflector A small layer over the Java Reflection API: read fields and methods, select annotated members, build instances, dump an object to a map. Targets Java 8.

streamer The collectors and stream helpers the JDK left out, in one utility class.

Writing

I publish on Medium, mostly about the JVM and what it does with the code you hand it:

• Java memory model
• JVM: the minimum every developer should know
• Classloaders, and writing your own