Scylla Blog

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Posts by Pekka Enberg

Dec11

Project Gemini: An Open Source Automated Random Testing Suite for Scylla and Cassandra Clusters

Today we are releasing a new data integrity testing suite for the open source community. Those who will have the most direct utility for this software will be those testing Scylla and Cassandra databases, or, more broadly, other CQL-compliant databases.

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Nov3

Scalable, Distributed Secondary Indexing in Scylla

The data model in Scylla and Apache Cassandra partitions data between cluster nodes using a partition key, which is defined by the database schema. Using a partition key provides an efficient way to look up rows using the partition key because you can find the node that owns the row by hashing the partition key. Unfortunately, this also means that finding a row using a non-partition key requires a full table scan which is inefficient. Secondary Indexes are a mechanism in Apache Cassandra that allows efficient searches on non-partition keys by creating an index.

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Nov9

Scylla on Docker

This blog post is a short introduction on how to use the ScyllaDB Docker image to start up a Scylla node, access nodetool and cqlsh utilities, start a cluster of Scylla nodes, configure data volume for storage, and configure resource limits of the Docker container. For full documentation, see the image description on Docker Hub.

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