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DragonFly kernel List (threaded) for 2006-01
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Re: lookupd-style daemon


From: Bill Hacker <wbh@xxxxxxxxxxxxx>
Date: Sat, 28 Jan 2006 10:34:10 +0800

Ivan Voras wrote:

Eli Green wrote:

Would it be more clever to take advantage of the fact that we have a

*trim*


'Spot input' here...

There's also a small issue with cache_timeout: if you have local cache_timeout of 30s and configure it to contact another instance of lookupd that also caches it for 30s, could the data get 1 minute stale?


Perhaps worse for double-caching.


 Might there not be a a 'worst case' situation wherein it was
*always* 29 seconds + local cache-age stale? i.e max 59 seconds, not 30

or on-average 15 seconds + local-cache-age stale, i.e. on average
30 seconds stale, not 15...

Though neither situation is new or lacking in workarounds...

Bill





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