[wp-hackers] Max number of WP sites per MySQL DB

Andy Skelton skeltoac at gmail.com
Tue May 11 20:42:23 UTC 2010

On Tue, May 11, 2010 at 12:58 PM, Otto <otto at ottodestruct.com> wrote:
> You might ask the WordPress.com folks. They're running one big
> installation, they can probably tell you how they've subdivided to
> help performance.

Very low-precision numbers follow.

We have 10^8 blogs spread across 10^2 master servers, each containing
10^3 databases.

So the number of blogs per database is about 10^3.

We developed a custom database class to deal with this and we released
the main parts of that code as HyperDB:


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