[mazerackham]

More or less agree with your point, just wanted to point out that scaling reads horizontally usually means adding a distributed quality to your system, and not understanding how that impacts the system can have bad side effects

[flukus]

Where do you draw the line of where a horizontally scalable system begins? Scaling reads might only involve a caching server, but most of us probably wouldn't consider an app server with a cache to be distributed.