Discussion and questions on Cassandra's usage and development happens mainly on the following mailing lists:
To chat with developers or users in real-time, join our channels on IRC freenode:
#cassandra
- for user questions and general discussions.#cassandra-dev
- strictly for questions or discussions related to Cassandra development.#cassandra-builds
- results of automated test builds.You can also check the Q&A about using Cassandra on Stack Overflow.
You can find a number of news, articles and use cases, as well a links to Cassandra user groups on the Planet Cassandra (not endorsed by Apache).
If you encounter a problem with Cassandra, the first places to ask for help are the user mailing list and the #cassandra
IRC channel.
If, after having asked for help, you suspect that you have found a bug in Cassandra, you should report it by opening a ticket through the Apache Cassandra JIRA. Please provide as much details as you can on your problem, and don't forget to indicate which version of Cassandra you are running and on which environment.