Add pprof server endpoint (optional, default off)

cmd/gemserve/gemserve.go

@@ -7,6 +7,8 @@ import (
 	"crypto/tls"
 	"fmt"
 	"net"
+	"net/http"
+	_ "net/http/pprof"
 	"os"
 	"os/signal"
 	"sync"
@@ -41,6 +43,16 @@ func runApp(ctx context.Context) error {
 
 	listenAddr := config.CONFIG.ListenAddr
 
+	// Start pprof HTTP server if enabled
+	if config.CONFIG.PprofAddr != "" {
+		go func() {
+			logger.Info("Starting pprof HTTP server", "address", config.CONFIG.PprofAddr)
+			if err := http.ListenAndServe(config.CONFIG.PprofAddr, nil); err != nil {
+				panic(fmt.Sprintf("pprof HTTP server failed: %v", err))
+			}
+		}()
+	}
+
 	signals := make(chan os.Signal, 1)
 	signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)