Rails: What is the point of Heroku (or other server farms) if Dbs do not scale?
Since most of the time an application's bottleneck is found in the db SQL code and given that ActiveRecord adds an abstract layer which in itself degrades performance, it would seem that there is little use in scaling the application server. What is the point of adding more dynos if the least common denominator in terms of performance turns out to be the db anyway?

Here is a blog post from heroku:

http://adam.heroku.com/past/2009/7/6/sql_databases_dont_scale/

Rails: What is the point of Heroku (or other server farms) if Dbs do not scale?
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Since most of the time an application's bottleneck is found in the db SQL code and given that ActiveRecord adds an abstract layer which in itself degrades performance, it would seem that there is little use in scaling the application server. What is the point of adding more dynos if the least common denominator in terms of performance turns out to be the db anyway?

Here is a blog post from heroku:

http://adam.heroku.com/past/2009/7/6/sql_databases_dont_scale/
