This is an interesting paper, but Telecom has not yet come to grips with the problems and advantages of fast shared commodity ethernet interconnect. North American service providers are in the process of upgrading their radio access networks with next
Project Roseline
Accurate and reliable knowledge of time is fundamental to cyber-physical systems for sensing, control, performance, and energy efficient integration of computing and communications. This simple statement underlies the RoseLine project. Emerging CPS [Cyber Physical Systems – vy] applications depend on
Cassandra
Cassandra is quite interesting – and time sync seems increasingly critical to correct operation. Here are some resources: A paper on the storage model from developers at Facebook. A reasonably clear introduction from IBM Developer Works. A big difficulty for
From Jersey to Wall Street – or the equivalent
A common configuration for FSMLabs TimeKeeper customers is to cross-couple time sources in New Jersey and New York City or London and Slough or Chicago and Aurora or Singapore and Sidney- any two trading locations that are connected with high quality
Cassandra Cluster Synchronization
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 run on synchronized clocks. It’s quite surprising that, given how crucial this is, it is not covered
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
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