Add upgrade from standard pprof example (#2829)

* Add upgrade from standard pprof example

* change funcitons to be more interesting

Author: Rperry2174

examples/golang-push/migrating-from-standard-pprof/README.md

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"sync"
+	"time"
+
+	_ "net/http/pprof" // Standard way of adding pprof to your server
+)
+
+func busyWork(d time.Duration) {
+	end := time.Now().Add(d)
+	for time.Now().Before(end) {
+		// Busy loop
+	}
+}
+
+func gatherClues(wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println("Gathering clues...")
+	busyWork(500 * time.Millisecond)
+}
+
+func analyzeEvidence(wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println("Analyzing evidence...")
+	busyWork(1 * time.Second)
+}
+
+func interviewWitnesses(wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println("Interviewing witnesses...")
+	busyWork(1 * time.Second)
+}
+
+func chaseSuspect(wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println("Chasing the suspect...")
+	busyWork(2 * time.Second)
+}
+
+func solveMystery(wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println("Solving the mystery...")
+	busyWork(2 * time.Second)
+}
+
+func main() {
+	var wg sync.WaitGroup
+
+	// Server for pprof
+	go func() {
+		fmt.Println(http.ListenAndServe("localhost:6060", nil))
+	}()
+	wg.Add(1) // pprof - so we won't exit prematurely
+
+	wg.Add(4) // Adding 4 detective tasks
+	go gatherClues(&wg)
+	go analyzeEvidence(&wg)
+	go interviewWitnesses(&wg)
+	go chaseSuspect(&wg)
+	go solveMystery(&wg)
+
+	wg.Wait() // Wait for all detective tasks to complete
+	fmt.Println("Mystery solved!")
+}