It was the two tier caching for performance and the auto flush that appealed to 
me ... serving lots of thumbnail images which occasionally get updated, and 
over time get outdated and unused, being replaced in use, and cache, by others. 
Pity then sob doesn't do binary ... 

Any advice from experience on nproxy in relation to scaling and load 

Damien

-----Original Message-----
From: AOLserver Discussion on behalf of Michael Andrews
Sent: Fri 10/26/2007 2:12 AM
To: [email protected]
Subject: Re: [AOLSERVER] nsdci query
 
In general, I find the SOB model works well. The caching on the  
server and the client provide unmatched performance. The NCF provides  
a mechanism to flush the cache on updates. The Devil is always in the  
details. How you set up multiple SOB servers and then get the  
publishes to multiple SOB servers can certainly create scaling and  
topology management issues.

Most sites to do not have the demands that AOL has - and a simple SOB  
solution would be nice addition to any content distribution system.   
However there are advantages to stateless systems. :-) (How's that  
for diplomatic)

M

On Oct 25, 2007, at 10:19 AM, Dossy Shiobara wrote:

> On 2007.10.25, Jay Rohr <[EMAIL PROTECTED]> wrote:
>> In general, I would not recommend using sob. It was developed for  
>> very
>> specific requirements at AOL and it does not scale well under load -
>> volume or frequency.  We are in the process of replacing it with
>> something else.
>
> Okay, this is just plain misinformation.  SOB works very well for what
> it was intended for, a low-write, high-read, distributed service for
> small objects (thus, the name "SOB").
>
> Any scaling issues AOL is having has to do with how it has since been
> misused and/or operationalized.
>
> -- Dossy
>
> -- 
> Dossy Shiobara              | [EMAIL PROTECTED] | http://dossy.org/
> Panoptic Computer Network   | http://panoptic.com/
>   "He realized the fastest way to change is to laugh at your own
>     folly -- then you can let go and quickly move on." (p. 70)
>
>
> --
> AOLserver - http://www.aolserver.com/
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