Apache Cassandra

→ 🦋 Source NoSQL Database

Manage massive amounts of data, fast, without losing sleep

[Apache Cassandra @cassandra]

→ 🦋 https://t.co/2uwatLhWdn

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[Apache Cassandra @cassandra]

Maxim Muzafarov, author of CEP-38, a CQL-based management API, with a live demo.

You can now run all nodetool commands without jmx or its port!

[Apache Cassandra @cassandra]

Francisco Guerrero on running Cassandra with mutual TLS. Certificates in place of passwords, how to rotate them, and how to migrate without an outage.

[Apache Cassandra @cassandra]

Štefan Miklošovič on dictionary compression with Zstd, CEP-54, which lands in 6.0, and probably as one of 6.0's best example of broad community collaboration, giving up to three fold storage cost stavings at 4kb chunk sizes, double at 16kb

[Apache Cassandra @cassandra]

Mariah McLaughlin and Carlos Rolo, from NetApp Instaclustr, making upgrades and migrations from 4 to 5 simple, predictable and safe.

[Apache Cassandra @cassandra]

Branimir Lambov presents CEP-57: flat keys and tries, and what they do for tombstones, partitioning, global indexes and materialised views

[Apache Cassandra @cassandra]

Youki Shiraishi, a researcher at NTT, presents comprehensive benchmark theory and results on Accord's fast path, transaction overhead, and ephemeral reads against simple, complicated and contented transactions.

[Apache Cassandra @cassandra]

Hayato Shimizu finishing the day with a live demo of CQLAI, an Apache-licensed alternative to cqlsh, built on bubbletea

[Apache Cassandra @cassandra]

Francisco Guerrero and Saranya Krishnakumar showing how the Analytics library reads SSTables through Sidecar, bypassing the read and write path entirely.

[Apache Cassandra @cassandra]

Bloomberg replaced its own in-house sidecar with the Apache one, and then started contributing back. Andrés Beck-Ruiz and Isaac Reath cover Sidecar’s architecture and features

[Apache Cassandra @cassandra]

Stefan Stoicescu from TU Delft, Software Engineering Research Group, finding non-trivial linearizability bugs by a model-guided approach that maps concrete executions to abstract TLA+ states, turning an unbounded trace-discovery graph into a usable coverage metric.

[Apache Cassandra @cassandra]

Alexandre Siret from IMDEA Software Institute on modelling Accord in TLA+

[Apache Cassandra @cassandra]

Carlos Rolo, Piotr Walczak and Sebastian Machlowski on how they moved more than four hundred Cassandra clusters, up to fifty a night.

[Apache Cassandra @cassandra]

Patrick Mcfadin on adding columnar format and using Cassandra as a HTAP database.

And community health, dealing with the increased contribution rate, and shipping releases on time.

[Apache Cassandra @cassandra]

Tejal Chakeres and Abhijeet Dubey wrapping up the day with"CEP-60: Flexible Placements"

Now ownership changes are linearizable, topology changes can happen in smaller steps that can be paused and resumed.

[Apache Cassandra @cassandra]

Memtables are the single largest contributor to Cassandra’s garbage collection overhead.

Kamil Leśniak's talk describes the final stage of a long progression: a fully off-heap memtable implementation building on the trie memtable

[Apache Cassandra @cassandra]

Cassandra 6.0 write performance improvements from Dmitry Konstantinov

the low down on how to "do less work" and "allocate less" and "contend less" and "helping the JIT"

[Apache Cassandra @cassandra]

Johnny Miller and a live demo of AIOps and what AI does for Kafka and Cassandra cluster operations today

[Apache Cassandra @cassandra]

Fedor Ryabinin getting into the depths of the Accord protocol, the first leaderless protocol deployed in a widely used production systems.

[Apache Cassandra @cassandra]

Bernardo Botella Corbi talking to native cpu profiling in Cassandra. Also with a call out to using easy-db-labs 🤩

https://t.co/xw9sYqe00L

[Apache Cassandra @cassandra]

A jammed pack Cassandra Track room has started!

Scott Andreas kicks it off with some great slides on "Cassandra: A Normal Database", describing how these things are getting implemented in lots of details.