java - Google App Engine 如何预编译 Java？

Question

App Engine uses a "precompilation" process with the Java bytecode of an app to enhance the performance of the app in the Java runtime environment. Precompiled code functions identically to the original bytecode.

有没有详细说明这是做什么的？

Answer 1

我在 googlegroups message 中找到了这个:

Yes, pre-compilation reduces the time to load an application. This will benefit you on your first request after a deploy, after you've been cycled out or if more application instances are created to scale up with your load. You will see up to 30% improved loading time on your first request. Pre-compilation works by doing a bit of class loading work ahead of time in the App Engine environment before the request comes in.

所以看起来预编译是关于优化加载时间，而不是运行时性能。