JMH benchmark for #39 and #42

Just wanted to keep this here for further reference.

With #39 and #42 there were some changes done to have less GC happen and to improve the general Message.toString() performance.

Here are the files used. Just package them into a new JMH benchmark project and then use

• mvn clean install
• java -jar target/benchmarks.jar -prof gc

JMH benchmark Message.java FieldMap.java NumbersCache.java