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keeping simple

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Fischer Lynch Patterson and timeouts

September 20, 2014 vy academics, theory

There is a widely cited (over 1400 cites in CiteseerX ) result called the Fischer-Lynch-Patterson theorem about consensus – a key issue in distributed databases or

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Why is clock synchronization so important in big data

September 19, 2014 vy timekeeper

Distributed transactions have historically been implemented by the database community in the manner pioneered by the architects of System R* [22] in the 1980s. The primary mechanism

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Patents considered harmful, by some.

September 16, 2014 vy software business

@vyodaiken This makes no sense. You don’t foster competition by handing out monopolies. — Timothy B. Lee (@binarybits) September 16, 2014 That’s not how it

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A claimed validated operating system.

September 16, 2014 vy operating systems, systems

The claim: we have demonstrated the comprehensive formal verification of the seL4 microkernel, with a complete proof chain from precise, formal statements of high-level security

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Cassandra

September 10, 2014 vy systems

Cassandra is quite interesting – and time sync seems increasingly critical to correct operation. Here are some resources: A paper on the storage model from

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A hard theorem becomes easy over time.

September 8, 2014 vy theory

The basic result of the incompleteness proofs is pretty simple.  The proofs are complicated because the idea was literally unthinkable until programming was invented. The

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From Jersey to Wall Street – or the equivalent

July 30, 2014 vy timekeeper, Uncategorized

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

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Real-time Linux

July 17, 2014 vy operating systems, rtlinux, software business

My opinion has always been that the Linux-RT project was based on an unfixable engineering error.   A few words on the status and the

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The Horrors of Software Patents

June 23, 2014 vy business, software business

US Patent Number  4701722 A is a perfect example of everything software patent opponents hate about software patents: It implements  mathematical functions that are pretty

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The technology disconnect

June 18, 2014 vy business, timekeeper

What it did was reinforce a point about the sociology of management: From cars to space shuttles, from offshore oil wells to nuclear reactors, the people who

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