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Apache Cassandra Performance Benchmarking | DataStax

Apache Cassandra Benchmarking: 4.0 Brings the Heat with New Garbage Collectors ZGC and Shenandoah Apache Cassandra 4.0 beta is the first version that supports JDK 11 and onwards. Latency is an obvious concern for Apache Cassandra™ users and big hopes have been put into ZGC, the new low latency garbage collector introduced in JDK 11. It reached GA in JDK 14, which made us eager to evaluate how good

bopperjp 2014/10/03

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Does CQL support dynamic columns / wide rows? | Datastax

bopperjp 2014/08/26

CQLで言うところと wide row とは、同一 partition にカラムキーの異なるデータが複数ある状態。CQLのスキーマは、row と column のメタデータでしかない。

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Advanced Time Series with Cassandra | Datastax

Cassandra is an excellent fit for time series data, and it's widely used for storing many types of data that follow the time series pattern: performance metrics, fleet tracking, sensor data, logs, financial data (pricing and ratings histories), user activity, and so on. A great introduction to this topic is Kelley Reynolds' Basic Time Series with Cassandra. If you haven't read that yet, I highly r

bopperjp 2014/08/25

時系列データのsharding方法

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DataStax for Developers | DataStax

DATASTAX FOR DEVELOPERSLearn How to Succeed with Apache Cassandra® Build your next-generation applications with the NoSQL database that has proven high performance, linear scalability and zero downtime across on-premises, hybrid, and multi-cloud environments.

bopperjp 2014/08/14

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Lightweight transactions in Cassandra 2.0 | Datastax

Astra DB gives JavaScript developers a complete data API and out-of-the-box integrations that make it easier to build production RAG apps with high relevancy and low latency.