func work(i int) {
fmt.Println("Start Work id: ", i)
P := pool.Name("db")
resource := P.Acquire() // obtain the resource
if resource == nil {
fmt.Println("Not enough resources to run: ", i)
} else {
if i%2 == 0 {
time.Sleep(time.Microsecond * 1)
} else {
time.Sleep(time.Microsecond * 2)
}
fmt.Println("Work id: ", i, " Resource id: ", resource)
P.Release(resource)
fmt.Println("End Work id: ", i)
}
}
func final() {
P := pool.Name("db")
P.Drain() // free up all resources
}