In Pictures: 15 high-impact Apache projects

From Harmony to Hadoop, Apache has been a powerful contributor to the open source ecosystem

Cassandra

The Cassandra database serves as a “scalable system of record” in the big data world, says Jonathan Ellis, vice president of the Cassandra project. Apache received the project from Facebook, which open-sourced Cassandra in 2008. Whereas Hadoop undertakes data analysis, Cassandra provides a data store for applications, often highly scalable ones on the Web. Netflix, for example, runs many Cassandra clusters, Ellis says.

Cassandra offers fault tolerance on commodity hardware or cloud infrastructure and can be replicated across multiple data centers. Slated for July, Cassandra 2.0 will include support for CAS (compare-and-set) capabilities, to combine read and update into a single operation; trigger support, for defining actions in response to updates made to different tables and further reduction in request latency.

2 of 16
VIEW ALL THUMBNAILS

Most Popular

Tethering tutorial: How to use your iPhone as a modem
Capacitive vs resistive touchscreens
How to pick the right size TV for your living room
LCD vs plasma vs LED TVs buying guide
The most disturbing YouTube videos of all time

Best Deals on PCWorld

TabletsView all »
NotebooksView all »
Mobile PhonesView all »
Printers & ScannersView all »
Networking, Wireless & VoIPView all »

rhs_login_lockSign up to PC World Today for the latest news, reviews and galleries from PC World Australia.