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 the amount of junk traffic directed at denial-of-service targets. Rather than directly flooding the targeted services with
Data tiedowns with reliable time stamping
Management teams are growing more reliant on the ability to immediately access and quickly sort through massive amounts of data to find the information they need – Data Governance for Financial Institution A “data tiedown” is a reliable and cross-checked timestamp
Challenges upgrading time synchronization in a global financial company
The real-world challenges of trying to upgrade time-synchronization without TimeKeeper are described in an excellent 2012 technical paper about a project at the company IMC Global Finance [IMC]. The article documents a two year, highly resourced project run by an
Time Maps in Action
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 Pocket GrandMaster (bottom left) is serving multiple Stratum
Time maps for visualizing time distribution networks
Without this information, a time distribution network is a black box. TimeKeeper looks at all the sources of time, in any protocol, that it can see around it, and tracks each source back to its source. These maps, especially in
Data integrity depends on time synchronization
In a distributed compute system, such as any multi-device transaction system or database, time synchronization is essential to data integrity. The simplest case is a multi-step transaction over multiple compute devices – something that is common to a wide range
Efficient Optimistic Concurrency Control Using Loosely Synchronized Clocks
Efficient Optimistic Concurrency Control Using Loosely Synchronized Clocks This paper describes an efficient optimistic concurrency control scheme for use in distributed database systems in which objects are cached and manipulated at client machines while persistent storage and transactional support are provided
Time Synchronization in the Cloud
Synchronizing clocks in the cloud, especially for virtual machines, is way beyond the capabilities of ordinary synchronization methods. Tests show that virtual machines in the cloud relying on NTPd can fall off the reference time by tens of minutes over
Mitre and GPS spoofing
Some slides on GPS timing vulnerabilities.
The business case for being time protocol agnostic.
Time Synchronization and Distribution is a business critical issue but it is easy to become bogged down in arcane technology/marketing controversies. One of those controversies is over the choice between low level network protocols used to deliver time to application