EPL is a programming language with some special features. As such, it shares the characteristic with every other programming language that it is possible to write poor, inefficient code. All the techniques that apply to other languages to minimize wasted cycles can also be applied to EPL.

Basic programming optimization techniques all apply:

There is no substitute for empirical evaluation of the performance of your application. You must measure performance and compare measurements when modifications are made. Also, ensure that you are comparing like-with-like. Understanding performance implications is invaluable and it helps in avoiding unnecessary performance costs.

You should know how fast your application needs to be.