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From Walter Underwood <>
Subject Re: Very very large scale Solr Deployment = how to do (Expert Question)?
Date Thu, 07 Apr 2011 15:43:16 GMT
On Apr 6, 2011, at 10:29 PM, Jens Mueller wrote:

> Walter, thanks for the advice: Well you are right, mentioning google. My
> question was also to understand how such large systems like google/facebook
> are actually working. So my numbers are just theoretical and made up. My
> system will be smaller,  but I would be very happy to understand how such
> large systems are build and I think the approach Ephraim showd should be
> working quite well at large scale. 

Understanding what Google does will NOT help you build your engine. Just like understanding
a F1 race car does not help you build a Toyota Camry. One is built for performance only, and
requires LOTS of support, the other for supportability and stability. Very different engineering
goals and designs.

Here is one view of Google's search setup:

This talk gives a lot more detail. Summary in the blog post, slides in the PDF. Google's search
is entirely in-memory. They load off disk and run.

How big will your system be? Does it require real-time updates?

Walter Underwood
Lead Engineer, MarkLogic

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