“For simplicity, we assume that the CPU obtains data from the RAM. Therefore, a caching system ensures that all the required content is available for serving, without there being a need to access the storage layer.”
Is it implied that the “caching system” referred to here is RAM? Or does it refer to some caching software running on the server?
Course: Grokking Modern System Design for Software Engineers & Managers - Learn Interactively
Lesson: Put Back-of-the-envelope Numbers in Perspective - Grokking Modern System Design for Software Engineers & Managers