Code refactoring, added clear button

server/internal/pool.go

@@ -1,16 +1,24 @@
 package internal
 
+// Pool implements heap.Interface interface as a standard priority queue
 type Pool []*Worker
 
 func (h Pool) Len() int           { return len(h) }
-func (h Pool) Less(i, j int) bool { return h[i].index < h[j].index }
-func (h Pool) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
-func (h *Pool) Push(x any)        { *h = append(*h, x.(*Worker)) }
+func (h Pool) Less(i, j int) bool { return h[i].pending < h[j].pending }
+
+func (h Pool) Swap(i, j int) {
+	h[i], h[j] = h[j], h[i]
+	h[i].index = i
+	h[j].index = j
+}
+
+func (h *Pool) Push(x any) { *h = append(*h, x.(*Worker)) }
 
 func (h *Pool) Pop() any {
 	old := *h
 	n := len(old)
 	x := old[n-1]
+	old[n-1] = nil
 	*h = old[0 : n-1]
 	return x
 }