Cassandra Cluster Synchronization

April 6, 2014 | 0 Comments

Cassandra is a highly-distributable NoSQL database with tunable consistency. What makes it highly distributable makes it also, in part, vulnerable: the whole deployment must [...]

NTPd DOS attacks

April 4, 2014 | 0 Comments

Miscreants who earlier this week took down servers for League of Legends, EA.com, and other online game services used a never-before-seen technique that vastly amplified [...]

Time Maps in Action

February 2, 2014 | 0 Comments

This shows a time map for a client (center) that is getting NTP time from a variety of standard internet NTP servers and via a customer site (to the left). A TimeKeeper [...]

Time Synchronization in the Cloud

January 21, 2014 | 0 Comments

Synchronizing clocks in the cloud, especially for virtual machines, is way beyond the capabilities of ordinary synchronization methods. Tests show that virtual machines in [...]
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