This article is not set out to try and persuade you, the reader, that using an iterator or materialized collection will universally solve your problems. Iterator and materialized collection usage can be used to solve the scenarios that we’ll be looking at, but both will come with a different set of pros and cons that we can further explore.
The purpose of this article is to highlight scenarios based on real world experiences where an iterator or materialized collection was being misunderstood, misused, and, ultimately, leading to a pile of headaches.