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From Matt Brown <Matt.Br...@citrixOnline.com>
Subject RE: resource.manager.defaultcache.size of 89 - any reason why?
Date Tue, 12 May 2009 12:51:08 GMT
Thanks all. I figured it had something to do with prime/hashing but was just curious if that
was correct :) 

-----Original Message-----
From: Will Glass-Husain [mailto:wglasshusain@gmail.com] 
Sent: Monday, May 11, 2009 6:02 PM
To: Velocity Users List
Subject: Re: resource.manager.defaultcache.size of 89 - any reason why?

I remember Dan Rall saying at the time it was because it was prime.

WILL

On Mon, May 11, 2009 at 2:19 PM, Antonio Petrelli <antonio.petrelli@gmail.com> wrote:
> 2009/5/11 Matt Brown <Matt.Brown@citrixonline.com>:
>> When resource caching is enabled in Velocity, and the default cache (ResourceCacheImpl)
is used, the default size of the LRU cache used (if not otherwise set) is 89.
>>
>> Just curious - anyone know how/why the value of 89 was chosen?
>
> IMHO, it could be that 89 is a prime number, and it is a good number 
> when doing division-based hashes.
> http://en.wikipedia.org/wiki/Hash_function#Variable_range
>
> However, I cannot tell why 89 and not another prime number.
>
> Antonio
>
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