benchmark result:
# Run complete. Total time: 00:03:25
Benchmark Mode Cnt Score Error Units
BenchmarkRunner.java thrpt 20 21909,403 ± 165,353 ops/s
BenchmarkRunner.json thrpt 20 232266,486 ± 2416,855 ops/s
BenchmarkRunner.kryo thrpt 20 203200,530 ± 1998,266 ops/s
BenchmarkRunner.mySerializer thrpt 20 21517,540 ± 199,320 ops/s
BenchmarkRunner.protobuf thrpt 20 388131,864 ± 2974,000 ops/s