DataStax Injects Scale into Real-Time Web and Enterprise Applications with Apache Cassandra™

STRATA CONFERENCE AND BURLINGAME, Calif. – Feb. 1, 2011 – DataStax (formerly Riptano – www.datastax.com), the commercial leader in Apache Cassandra™, today announced DataStax OpsCenter for Apache Cassandra at the Strata Conference (www.strataconf.com). DataStax OpsCenter is the first platform for managing, monitoring and operating enterprise Cassandra applications. With the new product, Cassandra users now have the most advanced operations environment bundled with expert support for their real-time, high-volume, and low-latency applications.

“Cassandra has quickly evolved as a key infrastructure component for the next generation of scalable
applications and services. Our customers are finding that anywhere that scale of data and real-time
responsiveness are a challenge, Cassandra is proving to be the answer” said Matt Pfeil, CEO and co-
founder, DataStax. “With DataStax OpsCenter we’re giving these customers the confidence and control
they need to deploy Cassandra for their most important applications.”

DataStax OpsCenter provides users with sophisticated visualizations of their cluster, comprehensive
management and configuration, and health and performance monitoring. Historical event and metric
tracking allows administrators to perform capacity planning and analyze performance and usage trends.
DataStax OpsCenter bundles DataStax’s tiered Cassandra support services. Additionally, DataStax will
also offer a fully featured free edition of OpsCenter for development and non-production usage.

“Our production applications and data services are required to handle extremely high-loads, massive
customer growth, and stringent real-time demands.” said Kevin McEntee, VP of Systems & ECommerce
Engineering at Netflix. “We looked at many competing solutions, and Apache Cassandra was the logical
choice. Working with the leaders at DataStax gives us what we need to deploy Cassandra in our global
cloud infrastructure.”

DataStax’s products and services focus on making it easy for customers to build and operate high-
volume real-time applications that are powered by Cassandra. Cassandra is unique in its ability to
perform low-latency data operations at extremely high rates, automatically maintain fault-tolerant
replicas within and across datacenters, and support near-unlimited incremental scaling of capacity and
performance by adding nodes. DataStax OpsCenter is the first of a series of innovative products that the
company will be introducing in 2011.

About DataStax

DataStax (formerly Riptano) is the commercial leader in Apache Cassandra™, and is leveraging this next-
generation data platform that evolved from work at Google, Amazon and Facebook to make it easy
for customers to build, deploy and operate elastically scalable and cloud-optimized applications and
data services. The company’s products and services make it easy for customers to build and operate
high-volume real-time applications. DataStax is based in Burlingame, CA with offices in Austin, TX and
Stamford, CT. DataStax has over 50 customers, spanning verticals including web, financial services,
telecommunications, logistics and government and is backed by industry leading investors, including
Lightspeed Venture Partners, Sequoia Capital and Rackspace Hosting. For more information, visit
www.datastax.com.

About Apache Cassandra™

Apache Cassandra™ is an open source distributed database management system. It is an Apache
Software Foundation top-level project designed to handle very large amounts of data spread out across
many commodity servers while providing a highly available service with no single point of failure.

Cassandra evolved from work at Google, Amazon and Facebook, and is in use at leading companies such
as Twitter, Netflix, Rackspace and Cisco.

For more information, visit http://cassandra.apache.org/.