Java development applications generate garbage that requires cleaning out by garbage collection (GC) mechanisms such as CMS, G1, Azul C4, and PostgreSQL's vacuuming process. Even after the Java heap is cleaned, garbage can be generated beyond its boundaries, including relational databases like PostgreSQL, which stores dead tuples to maintain multi-version concurrency protocol (MVCC). Vacuuming processes are used to reclaim space in PostgreSQL, but they can block application workloads. Additionally, solid-state drives (SSDs) also require garbage collection routines, which involve erasing stale data at the block level and using over-provisioning techniques to minimize performance impact. Effective garbage collection can simplify software and hardware architecture without affecting performance, as seen in Java, PostgreSQL, and SSDs.