Suppose you’re running a pool of servers where each server type is numbered sequentially from 1.
Sometimes, we’ll want to create a new server or decommission an old one.
Write two methods, allocate(host_type) and deallocate(hostname).
The former should reserve and return a new hostname, the latter should release the specified hostname.
in main.go you have
servers := make(map[string][]int)
fmt.Println(allocate("storage", servers))
fmt.Println(allocate("storage", servers))
fmt.Println(deallocate("storage-1", servers))
fmt.Println(allocate("storage", servers))
fmt.Println(allocate("metrics", servers))
and when you run the app using go run . you get
storage-1
storage-2
storage-1
metrics-1
If you deallocate a server that does not exist, you'll get an error