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Cassandra 1.1 Brings Cache Tuning, Mixed Storage Support

Apache has dished out another serving of Cassandra, the open source NoSQL database popular for handling big data. The improvements speak to a maturing NoSQL database that's well-suited for big data deployments. This time around, Cassandra has improvements to its query language, and tuning improvements that will help companies trying to boost performance with a mixture of magnetic media and solid state drives (SSD). Its continued development helps maintain open-source dominance in the big data/NoSQL market. Cassandra 1.1 hits just a bit more than six months after Apache released Cassandra 1.0, in October 2011. The major features in 1.1 point to Cassandra's focus on very large data sets. Notable Features Jonathan Ellis, vice president of the project and CTO of DataStax, pointed to several features that make 1.1 more than just a minor update. One of the most interesting is Cassandra's support for intelligently mixing magnetic and SSD media. Ellis says that a Cassandra deployment may have some tables that are updated more frequently than others, so it makes sense to put some tables on magnetic media (which is much slower) and other tables on SSD. Prior to the 1.1 release, Cassandra had no way of distinguishing between the two. This meant that if you mixed media, you could have very uneven results. The alternative, going all SSD or all spinning disks, was either very expensive (SSD) or much slower (magnetic media). Cassandra deployments can hit hundreds of terabytes of data. The largest (known) production cluster, according to Apache, exceeds 300TB of data spread...

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VMware CEO Sees OpenStack as Lacking Maturity

Earlier this week, we covered a post from VMware that seemed to brush off all three of the emerging open source cloud computing platforms that are gaining such strong momentum, namely OpenStack, CloudStack and Eucalyptus.

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VMware Blog Post Targets Open Source Cloud Platforms

Last year, Citrix Systems announced that it had completed the acquisition of had many notable customers who favored its cloud stack infrastructure, including GoDaddy and Zynga. That acquisition has helped fuel Citrix's recent big move forward with CloudStack, its contribution of the Cloudstack platform as open source to Apache, and its choice to abandon the open source OpenStack cloud platform.

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Rackspace to Deliver Production-Scale, Supported OpenStack Cloud Platform

With the OpenStack spring conference taking place in San Francisco this week, there is already a wave of OpenStack-related news arriving. The open source cloud computing platform, of course, is shaping up for fierce competition with Citrix's CloudStack and other platforms.

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Big Tech Muscle Pledges Support, Money for New OpenStack Foundation

The OpenStack cloud platform hasn't been short of powerful companies backing it, and now 19 of them have pledged support, including substantial amounts of money, for OpenStack Foundation, which is to be a nonprofit organization functioning as steward of the open source OpenStack framework.

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