You can use the following test source code to compare the performance of AirConcurrentMap with the standard Java Maps. These are minimal tests that each simply report a particular characteristic over various Map sizes . The tests are intended to be obvious and so simple that there is no possible bias. There is also thorough test code provided in the download which generates performance data that we show elsewhere in our graphs – also with no bias! We have tweeted the tests -hence the name TwitterDemo.java. We test access, iteration, memory efficiency, and streaming.