Cassandra cluster with bad insert performance and insert stability

Question

I have to store around 250 numerical values per second, per client, which is around 900k numbers per hour. It probably will not be a full-day recording (probably between 5-1

Answer 1

What are your results using unlogged batching? Are you sure you want to use batch statements at all? https://medium.com/@foundev/cassandra-batch-loading-without-the-batch-keyword-40f00e35e23e