||The PHP Scalability Myth|
|Subject:||Two-tier vs. three-tier|
Response to: Two-tier vs. three-tier
Physically separating the tiers is more hurtful than helpful. If your web server and application are both sharing the same hardware, and your application needs more power but your web server doesn't, how will it hurt anything to simply run the combination on more servers? It won't. But it will cut down on the overhead of communicating with remote servers, which is very significant.
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