GC is the abbreviation of the English vocabulary Garbage Collection, which is generally translated as "garbage collection" in Chinese. Of course, sometimes in order to make the text smoother, "garbage collection" is also said. It is generally believed that "garbage collection" and "garbage collection" mean the same thing. In addition, GC also means "garbage collector", which is expressed in English as Garbage Collector. In this section, we will explain in detail the commonly used GC algorithms.

Gossip GC

If we do business, we need warehouses to store supplies. If all warehouses need to be built by the company, the cost will be too high. The average person can't play it, and the efficiency is not high. It is difficult to make money if the cost is not controlled. Therefore, modern society has a spirit of sharing and a sense of leasing, which has greatly improved the resource utilization rate of the entire society.

For example, in a supply chain, company A is transferred to company B, and company B is transferred to company C. Then each company's own processing workshop and private warehouse are similar to thread space, and there will be corresponding pipelines in the factory. Because each company/salesman has limited energy, this private space cannot be infinitely large.

The public warehouse is similar to the heap memory, which is much larger than the private space, and it is very convenient for other companies to access the materials, or they can be accessed directly, or they can be accessed by locking them with keys. Obviously, this system needs effective management for the entire warehousing system to function well. For warehouses that are no longer in use, we need to say hello that we don’t need it, or the company has to pay for it all the time, which is actually a waste of company money and social resources. This is similar to memory release.

You can also use the shared workstations in the maker space as an analogy, the workstations (memory) are limited and fixed. Everyone can rent (apply for memory) and take