From: Andrey V. Lepikhov <a.lepik...@postgrespro.ru>
> After researching in depth, I think this is the real problem.
> My idea was that we are not using real clocks, we only use clock ticks to
> measure time intervals. It can also be interpreted as a kind of clock.

Yes, patent claims tend to be written to cover broad interpretation.  That's 
too sad.


> That we can do:
> 1. Use global clocks at the start of transaction.
> 2. Use CSN-based snapshot as a machinery and create an extension to allow
> user defined commit protocols.

Is this your suggestion to circumvent the patent?  Sorry, I'm afraid I can't 
understand it yet (I have to study more.)  I hope others will comment on this.


Regards
Takayuki Tsunakawa


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