Datastax announced this week that it has completed a $45 million series D round of funding led by Scale Venture Partners with participation from existing investors Lightspeed Venture Partners, Crosslink Capital and Meritech Capital Partners, and new investors DFJ Growth and Next World Capital.

The company says the funding builds on its ongoing customer momentum, which includes 20 companies in the Fortune 100, as well as “dozens” of enterprise migrating from Oracle to Cassandra-based NoSQL.

DataStax says it will use the money to further invest in international expansion, channel growth and product development.

“The evolution of enterprise applications and rise of big data has eclipsed traditional database capabilities and provides an opening for a significant new market entrant,” said Andy Vitus, partner, Scale Venture Partners. “DataStax is poised to disrupt the traditional RDBMS market and has already demonstrated significant momentum – signing an enviable list of enterprise customers, expanding into Europe, and unveiling innovative releases that make the product easier to adopt, deploy, and manage. We look forward to working with the team to further accelerate their expansion as they address this large and growing market.”

“Our Cassandra-based platform is far and away the best solution for powering online applications that must remain available at all times and scale to tremendous levels,” said Billy Bosworth, CEO, DataStax. “Today’s funding exceeds all the capital we’ve received to date, and we will use this investment to accelerate our international expansion, channel growth, sales and marketing and product development while increasing our support for the open-source Cassandra community.”

The company’s customers currently include Netflix, eBay, Adobe, Constant Contact, and Ooyala.

DataStax also unveiled new enterprise software this week: DataStax Enterprise (DSE) 3.1. More on that here.