[Info-vax] Databases versus RMS

[Arne Vajhøj]

On 4/18/2012 5:43 PM, FrankS wrote:
> On Tuesday, April 17, 2012 8:12:24 PM UTC-4, Arne Vajhøj wrote:
>> Don't under estimate the capabilities of MySQL.
>>
>> It is used by some of the biggest web sites like
>> Wikipedia, Facebook and Yahoo.
>>
>> And the special Cluster Carrier Grade Edition is used
>> by several telcos including: Alcatel-Lucent, Italtel and Telenor.
>
> These are all highly customized variants of MySql, and not the one that you or I would download to install on our personal or even customer systems.

I am no aware that Google or Yahoo has customized their MySQL. Refs?

It is wellknown that Facebook has customized their MySQL. But:
1) It is mostly "nice to have extras" not something necessary
    (the change most frequently mentioned is that they piggy back
    cache flush instructions with the MySQL replication)
2) They have actually released their changes as open source, so
    if somebody want them they can get them

Arne