Spring's about as efficient a way to build applications on the JVM as they come, but the JVM itself offers some room for improvement. Class changes, for example, require redeploys and dramatically slow down a developer's iteration cycle. ZeroTurnaround's JRebel can help! It knows how to reload all manner of class changes (add new methods, fields, constructors, methods, etc.) _and_ inform the frameworks (like Spring and JPA) that sit above those reloaded classes of the changes. In this talk, Adam Koblentz and I look at how to get started, and keep going, faster than ever before!