How is the lifecycle duration determined in the zero-generation system?

In a Zero Generation GC memory management system, the lifetime of an object is determined by the time it exists from creation until the garbage collector determines that the object is no longer used.

In such systems, objects that live very short periods are collected quickly, as the garbage collector assumes that most objects are 'young' and quickly become unnecessary. The lifetime in this context is the time between memory allocation for the object and its removal by the garbage collector.

In C#, this is implemented through generational garbage collection, where objects initially go into generation 0 (zero generation). If an object survives multiple garbage collections, it is promoted to older generations, which affects the frequency and duration of its cleanup.