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is there a prevalence layer in scheme?
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quiet_lad
May 20, 2012, 9:16:18 PM5/20/12
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fred....@treklogic.com
Jun 18, 2012, 1:18:12 PM6/18/12
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On Sunday, 20 May 2012 21:16:18 UTC-4, quiet_lad wrote:
> http://www.advogato.org/article/398.html
quiet_lad
I read the article -- frankly, I didn't understand it. It appears that "prevalence" in the article only refers to pure functional "business objects". Somehow, this is linked to ACID. (Sorry, I didn't have time to go code reading).
But, for pure functional, why not just use memoization? A memoization function that returns the memoized function for a function is easy enough in Scheme.
And, if you want restartable computation, use a hash table for the memoizer, and serialize that on occasion.
Seems easy enough.
> http://www.advogato.org/article/398.html
quiet_lad
I read the article -- frankly, I didn't understand it. It appears that "prevalence" in the article only refers to pure functional "business objects". Somehow, this is linked to ACID. (Sorry, I didn't have time to go code reading).
But, for pure functional, why not just use memoization? A memoization function that returns the memoized function for a function is easy enough in Scheme.
And, if you want restartable computation, use a hash table for the memoizer, and serialize that on occasion.
Seems easy enough.
quiet_lad
Jun 28, 2012, 7:35:01 PM6/28/12
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items in ram
updates to disk
whole image dumped every 6 hours
on fault read in dump
then rearead log to restore state
all updates n reads flow through command objects
querys in native anguage
100k/s on desktop reads
commits less but very fast too as log is in sequence write
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