Java: Generational GC

Young Generation is for new objects; Old Generation is for long-lived objects.

The Young Generation is a memory area where new objects are allocated. It undergoes frequent garbage collection called Minor GC. Objects that survive multiple Minor GCs are promoted to the Old Generation, which is collected less frequently during Major GC. This separation helps optimize memory management by focusing on short-lived objects first. For example, a user session object in an e-commerce app might start in the Young Generation and eventually move to the Old Generation if it persists.