Glossary term
What is RAM (Random Access Memory)?
RAM stands for Random Access Memory.
Fast, temporary working memory. Example: Redis keeps its data in RAM, which is why it's fast.
Learn it properly · System DesignLesson 10: Back-of-the-Envelope Estimation, Step by StepFive minutes of rough maths tells you whether you need one database or fifty. The numbers worth memorising, a seven-step recipe, and a full worked estimate for a photo-sharing app — with a calculator to try your own.