Profiling a production Apache Cassandra® node has meant attaching something to it and hoping. CASSANDRA-20854 puts a CPU profiler in the server. Bernardo Botella Corbi points it at 6.0's new work — Accord, CDC, constraints. cassandra.apache.org/_/events/202...

Apache Cassandra | Apache Cassandra Documentation

The Apache Cassandra track at Community Over Code 2026, Glasgow, 11-13 October

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Terabyte-scale ingestion into Apache Cassandra® is a different problem from fast writes. Throughput, backpressure, and what happens when a bulk load meets live traffic. Alexandru Salajan, Site Reliability Engineer, Adobe. cassandra.apache.org/_/events/202...

Apache Cassandra | Apache Cassandra Documentation

The Apache Cassandra track at Community Over Code 2026, Glasgow, 11-13 October

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Should Apache Cassandra®'s new management API reuse port 9042? No — because disablebinary shuts 9042 down, and that is precisely when you need management access. CEP-38's trade-off. Maxim Muzafarov. cassandra.apache.org/_/events/202...

Apache Cassandra | Apache Cassandra Documentation

The Apache Cassandra track at Community Over Code 2026, Glasgow, 11-13 October

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Analytical workloads on Apache Cassandra® have historically meant moving the data somewhere else first. Francisco Guerrero and Saranya Krishnakumar on running them in place, and what that enables. cassandra.apache.org/_/events/202...

Apache Cassandra | Apache Cassandra Documentation

The Apache Cassandra track at Community Over Code 2026, Glasgow, 11-13 October

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ADBC users have been asking for NoSQL support. So we released our first NoSQL driver for @cassandra.apache.org. Query Cassandra from 10+ languages through ADBC's standard interface, with results returned in @arrow.apache.org columnar format. Install the pre-release 👉 dbc install --pre cassandra

Memtables live on the JVM heap. The heap has a garbage collector. The garbage collector has opinions about your p99. Branimir and Kamil on moving them fully off-heap. Branimir Lambov — Software Engineer, IBM/DataStax Kamil Leśniak — Software Engineer, IBM cassandra.apache.org/_/events/202...

Request decoding. Validation. Coordination. Memtable allocation and flush. Compaction. Metrics. A year of source-level work on the Apache Cassandra® 6.0 write path, and the flamegraphs that found each one. Dmitry Konstantinov, NetCracker Technology. cassandra.apache.org/_/events/202...

Tombstones and manual partitioning: two long-standing frustrations in Apache Cassandra®, and both fall out of one design decision. CEP-57 flattens the key hierarchy to a byte sequence and puts tries over it. Branimir Lambov and Christophe Bornet, IBM. cassandra.apache.org/_/events/202...

Apache Cassandra® supports one authenticator per node, so changing authentication method on a live cluster means moving every client at once. CEP-50 lets clients advertise what they support while the server keeps the decision. Joel Shepherd, Amazon.com. cassandra.apache.org/_/events/202...

Apache Cassandra® drivers ignore topology DOWN events — they aren't reliable. So a node deliberately shutting down keeps taking requests until its connections fail. CEP-59 tells the client instead. Jane He, IBM. cassandra.apache.org/_/events/202...

400+ Apache Cassandra® clusters. Up to 50 in a night. Zero downtime. Pegasystems and NetApp Instaclustr built a Migration API to do it. Carlos Rolo brings the alert storms, the platform limits and the split-operations bug too. cassandra.apache.org/_/events/202...

"Apache Cassandra®: A Normal Database" Transactional metadata. Distributed transactions. Full ACID. Mutation tracking. Scott Andreas lays years of community work side by side and asks what's left of the caveats – Core Databases, Apple. cassandra.apache.org/_/events/202...

[RELEASES] ⦿ Python Driver version 3.30.1 ⦿ GoCQL Driver version 2.0.0 ⦿ GoCQL Driver version 2.1.2 ⦿ Java Driver version 4.19.3 ⦿ Analytics version 0.4.0 Download them at: cassandra.apache.org/_/download.h... Thanks to everyone who helped make all these releases happen ‼️

[RELEASE] Apache Cassandra 5.0.9 is out ‼️ Download it at: cassandra.apache.org/_/download.h... News: github.com/apache/cassa... Changelog: github.com/apache/cassa...

[RELEASE] Apache Cassandra 6.0-alpha2 is out ‼️ This alpha off the cassandra-6.0 release branch is for testing and development purposes. Download it at: downloads.apache.org/cassandra/6.... News: github.com/apache/cassa... Changelogs: github.com/apache/cassa...

The Apache Cassandra® community is running a three-day track at Community Over Code 2026, the official conference of the Apache Software Foundation, at the Hilton Glasgow. Twenty sessions, from twenty-seven speakers across a dozen organisations. cassandra.apache.org/_/events/202...

CEP-53 in implementation: Rolling Restarts for #ApacheCassandra via Sidecar! Monitor, pause, resume, and abort rolling restarts through a REST API. No more babysitting restarts by hand. cwiki.apache.org/confluence/d... #ApacheCassandra #Ops #NoSQL #OpenSource #DistributedIsResilient

CEP-53: Cassandra Rolling Restarts via Sidecar - CASSANDRA - Apache Software Foundation

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CEP-55 is landing in #ApacheCassandra 6.0: Auto-generated role names! No more manually specifying a unique role name on every CREATE ROLE — let Cassandra generate one for you. Small UX improvement, real operational win. 🔐 cwiki.apache.org/confluence/d... #NoSQL #OpenSource #ASF

CEP-55 Generated role names - CASSANDRA - Apache Software Foundation

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CEP-52 is available in 6.0: Schema Annotations in CQL for #ApacheCassandra! Add inline comments and security labels to keyspaces, tables, columns, and UDTs — queryable via system views. Better documentation and classification, baked into the schema. ✍️ cwiki.apache.org/confluence/d...

CEP-52: Schema Annotations for ApacheCassandra - CASSANDRA - Apache Software Foundation

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CEP-43 is landing in #ApacheCassandra 6.0: CREATE TABLE LIKE! Copy an existing table's schema — columns, types, and annotations — a starting point for a new template tables. No more manual copy-paste of long CREATE TABLE statements. 🎉 cwiki.apache.org/confluence/d...

CEP-43 Apache Cassandra CREATE TABLE LIKE - CASSANDRA - Apache Software Foundation

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CEP-58: Satellite Datacenters has passed its vote! 🛰️ Multi-region HA using 2 full DCs + small satellite nodes — lower cost than a traditional 3-DC setup, with transactionally consistent failover and zero data loss. cwiki.apache.org/confluence/d...

CEP-60: Flexible Placements - CASSANDRA - Apache Software Foundation

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CEP-48 has passed vote: First-Class Materialized View support Consistency, reliability & backfill enhancements — a big step toward production-ready MVs. Follow: cwiki.apache.org/confluence/p... #ApacheCassandra #NoSQL #OpenSource #ASF

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CEP-32: OpenTelemetry Tracing is coming to #ApacheCassandra! 🔍 Vote passed. Native OTel integration — correlate Cassandra query spans with your existing observability stack. cwiki.apache.org/confluence/d... #OpenTelemetry #NoSQL #Observability #OpenSource

CEP-32: OpenTelemetry tracing integration - CASSANDRA - Apache Software Foundation

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[RELEASE] Apache Cassandra 6.0-alpha1 is out ‼️ This is a quarterly alpha release, for testing and development purposes. Download it at: downloads.apache.org/cassandra/6.... News: github.com/apache/cassa... Changelogs: github.com/apache/cassa...

📅 Cassandra has formalized its release cadence: one major release per year (beginning each April), with quarterly trunk alphas in between. lists.apache.org/thread/y3fyv... Predictable upgrades as the project heads toward 6.0.

[RELEASE] Apache Cassandra Releases 5.0.7 , 4.1.11 and 4.0.20 are out ‼️ Downloads: cassandra.apache.org/_/download.h... Changelogs:  • github.com/apache/cassa...  • github.com/apache/cassa...  • github.com/apache/cassa...

[RELEASE] Apache Cassandra Analytics 0.3.0 is out! Downloads: downloads.apache.org/cassandra/ca... Changelog: github.com/apache/cassa... #ApacheCassandra #NoSQL #OpenSource

Index of /cassandra/cassandra-sidecar/0.3.0

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[RELEASE] Apache Cassandra Sidecar 0.3.0 is out! Downloads: downloads.apache.org/cassandra/ca... Changelog: github.com/apache/cassa... #ApacheCassandra #NoSQL #OpenSource

CEP-59: Graceful Disconnect for #ApacheCassandra! When a node shuts down, it now signals connected drivers via an in-band GRACEFUL_DISCONNECT event. Drivers stop new queries, let in-flight requests finish, then reconnect — no more client-side timeouts on restarts 🔄 cwiki.apache.org/confluence/p...

The #ApacheCassandra PMC is delighted to welcome Francisco Guerrero ( @francisco-guerrero.bsky.social ) as our newest PMC member! 🎉 Francisco has been a key contributor to the project — especially driving the Sidecar sub-project forward. Congratulations! 🎊 #ASF #OpenSource #NoSQL