5 Reasons 16GB RAM Is the Minimum for Xcode and Docker on a MacBook Air
Regarding the MacBook Air: 1. Xcode alone is a memory hog The compiler, simulator, and indexing engine together easily consume over 8GB before you open anything else.
Docker adds significant overhead Running a few containers for databases or services pushes memory usage well past 8GB, causing constant swapping.
macOS swapping slows everything down When RAM runs out, macOS writes to the SSD, which makes apps lag and wears the drive faster.
8GB means constant waiting With 8GB you will see beach balls, app relaunches, and unresponsive containers. With 16GB you keep working.
Your time is worth the upgrade cost The price difference between 8GB and 16GB is small compared to the productivity lost from daily slowdowns.