What reasons can cause memory leaks in applications?

Memory leak in Go applications can occur for several reasons:

• Holding references to objects that are no longer needed. For example, if a slice or map contains references to objects that are not used, the garbage collector cannot free them.
• Goroutines that do not terminate. If a goroutine is stuck in a loop or waiting on a channel that never closes, it will hold onto memory.
• Using global variables or caches without clearing them. If data is constantly added and not removed, memory will grow.
• Errors in working with unsafe or CGo. Improper memory management outside the Go runtime can lead to leaks.

Example: if you create a slice and keep adding elements to it without clearing, the memory will increase.