Announcing DataStax Enterprise 3.1 and OpsCenter 3.2
We’re pleased to announce the immediate availability of DataStax Enterprise 3.1, which includes the latest release of OpsCenter, version 3.2. For all the specific details about what’s new in both the...
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Lightweight transactions in Cassandra 2.0
Background When discussing the tradeoffs between availability and consistency, we say that a distributed system exhibits strong consistency when a reader will always see the most recently written...
View ArticleCQL improvements in Cassandra 2.0
At the time of this writing, Cassandra 2.0.0-beta2 has just been released and it shouldn’t be too long before the final lands. In this blog post, we will describe the improvements and new features...
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Advanced repair techniques
Anti-entropy repair in Cassandra can sometimes be a pain point for those doing deletes in their cluster, since it must be run before gc_grace expires to ensure deleted data is not resurrected. Reliable...
View ArticleCassandra Log Viewing with gltail
gltail by Erlend Simonsen is a real time log viewer written in Ruby that provides an interesting live view of your log data from multiple servers. Log entries are assigned to blocks/labels which are...
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OpsCenter: An Architecture Overview
OpsCenter is a great tool for managing and monitoring your Cassandra and DataStax Enterprise clusters. In this post we’ll dive a bit deeper into the architecture to get a better view into how OpsCenter...
View ArticleDataStax OpsCenter 3.2.1 Available
You can now download the latest update to our Enterprise and Community editions of DataStax OpsCenter. Full details about the release can be found in the release notes.
View ArticleIntroducing DataStax DevCenter
Our CEO and I both have backgrounds of creating database tools at prior companies, so naturally we’re huge advocates of having good tools at the ready that help increase the productivity of database...
View ArticleDataStax Python Driver: Beta release available!
Several weeks after open sourcing our Python Driver, we’re proud to release a first beta of this new driver designed for CQL and the Native Protocol introduced in Cassandra 1.2. While the classic...
View ArticleDataStax Enterprise 3.0.6 Now Available
DataStax Enterprise 3.0.6 is now available for download. Please see the release notes for specific information about bug fixes and improvements.
View ArticleDataStax Enterprise 3.1.2 Now Available
DataStax Enterprise 3.1.2 is now available for download. This release includes enhancements in managing a DSE Search cluster. Please see the release notes for specific information about bug fixes and...
View ArticleCassandra and Pig Tutorial
Exploring Data in Cassandra using Pig with DataStax Enterprise 3.1 Introduction Often my wife and I like to play a a little guessing game. One of us will think up an odd question like “How many...
View ArticleWhat’s New in Cassandra 2.0: Prototype Triggers Support
Warning: as of Cassandra 2.0.0, the ITrigger interface and the rest of the triggers implementation are not final – and will change in 2.1. Please be aware of this before using triggers in production...
View ArticleWhy Cassandra doesn’t need vector clocks
One of the notable features of Amazon’s 2007 Dynamo paper was the use of vector clocks for conflict resolution. However, the two most prominent systems designed by engineers who worked on Dynamo —...
View ArticleDataStax OpsCenter 3.2.2 Available
You can now download the latest update to our Enterprise and Community editions of DataStax OpsCenter. Full details about the release can be found in the release notes.
View ArticleWhat’s under the hood in Cassandra 2.0
The headlining features in 2.0 are lightweight transactions, CQL enhancements, and triggers. But 2.0 also features a lot of internal optimizations and improvements! Performance optimization Tracking...
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Streaming in Cassandra 2.0
“Streaming” is a component which handles data (part of SSTable file) exchange among nodes in the cluster. When you bootstrap a new node, it gets data from existing nodes using streaming. When you run...
View ArticleDataStax Community Edition 1.2.9 now available
DataStax Community Edition 1.2.9, which includes Apache Cassandra 1.2.9, is now available on our downloads page. All changes can be found in the CHANGES.txt file in the main installation directory.
View ArticleDataStax Enterprise 3.1.3 Now Available
DataStax Enterprise 3.1.3 is now available for download. Please see the release notes for specific information about bug fixes and improvements.
View ArticleDataStax Community Edition 2.0.0 now available
DataStax Community Edition 2.0.0, which includes Apache Cassandra 2.0.0, is now available on the Planet Cassandra Downloads page. All changes can be found in the CHANGES.txt file in the main...
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