This document discusses patterns for enterprise application architecture. It covers topics like embracing change using extreme programming, separating concerns with layers, and scaling applications using technologies like Apache, mod_passenger, and Rails. The document also references patterns for caching, asynchronous messaging, and distributed systems.Read less
![ObjectiveResource](https://cdn-ak-scissors.b.st-hatena.com/image/square/aae7b1b9ea202bb0e5a9f1ea618c9fdfbaaeec69/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fobjectiveresource-100306081751-phpapp02-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)