How Operating Systems and Hardware Enforce Atomicity
Posted: | Tags: system-design, tech
From File Systems to Transistors: How Operating Systems and Hardware Enforce Atomicity - Part 1 AI Generated Problem Statement: If two CPU cores attempt the same operation at almost exactly the same instant—such as creating temp.txt with O_CREAT | O_EXCL—why does only one succeed? Every backend engineer has relied on file-system atomicity. Creating a lock file with open(..., O_CREAT | O_EXCL) or using mkdir() as a lock are common synchronization techniques. Read more...