If it is said in computer science, then garbage collection is a type of memory management. It automatically cleans up unused objects and pointers in memory to allow resources to be used again.
Some programming languages have built-in garbage collection, while others require custom functions to manage unused memory.
A very common method is garbage collection, which is called reference counting. This strategy counts how many references are in memory to store each object. If an object has zero references, they are considered unnecessary (respectable), and it can be deleted to free up memory space.
With advanced reference counting, it detects objects that refer only to one another, indicating that those objects that are now unused are in the parent process.
Garbage collection can also be done at compile-time when the source code is compiled into an executable program.
In this process, the compiler determines which memory resources will never be accessed anymore for a certain time. Again adds such instructions that automatically deallocate those resources from memory.
While this is an effective way to remove unused objects, it has to be done conservatively to prevent the references from being deleted, which may be needed later in a program.
Garbage collection is an important part of software development because it prevents programs from using more RAM. While it helps programs run more efficiently, it also protects them from dangerous bugs, such as memory leaks, which can also crash a program.