Apache Cassandra 4.0 Benefits

Apache Cassandra™ is the fastest, most elastic, and most available database in the world, and with Cassandra 4.0 it is getting better. Apache Cassandra 3.11.6 maxed out at 41k ops/s while Apache Cassandra 4.0 running on the same hardware goes up to 51k ops/s, which is a nice 25% improvement. 

It is important to call out that OSS partnership with DataStax (including 4.0 and older versions of Apache Cassandra) resulted in 20% infrastructure cost savings. Read more on this in the whitepaper

With Apache Cassandra 4.0 you get:

• Faster, Denser nodes
• Backpressure and improved resiliency in the system
• Realtime audit logging and workload capture and replay
• The most stable, battle-tested major release of Cassandra Ever (Tested by Apple, DataStax, Instagram, Netflix, and dozens more)

Cassandra 4.0 provides improvements everywhere: 

Better ROI: Performance and density improvements 

• Significant compute improvements
• Support for zstd compression

Operator improvements

• Compaction: performance improvements (CPU and memory)
• Networking: major improvements in performance and client backpressure
• New feature: Realtime audit logging
• New feature: Workload capture and replay (QA, root cause analysis)
• Incremental repair hardening

Bootstrapping and Recovery improvements: 5x faster with zero-copy streaming