Cache miss stampedes

[BUSTARRET, Jean-francois]

> -----Message d'origine-----
> De : dormando [mailto:dormando at rydia.net] 
> > You would not need tuning, and the rate of incoming 
> requests is not a 
> > problem IMHO.
> > 
> > - If the rate is very low, one can expect that there won't be any 
> > stampede (unless the regeneration code is veeeeeeery slow, 
> but this a 
> > code tuning problem, and not a caching one)
> > - If the rate is moderate, it works fine
> > - If the rate is very high, I still prefer to 1% of requests 
> > regenerating the key instead of 100% one minute later...
> 
> Or do you mean it simply returns a cache miss randomly? I 
> guess that'd work.

Yep ! 1% of cache requests will return a cache miss, 99% will return a
cache hit with the data.