====== Open-source ====== statistics: * https://coderstats.net/github/#apache * https://www.somsubhra.com/github-release-stats/?username=apache&repository=cassandea software * https://rocketmq.apache.org/docs/faq/ * https://github.com/apache/pulsar * https://github.com/apache/trafodion protocols: * JDBC * https://calcite.apache.org/avatica/ - Avatica is a framework for building database drivers.