Use atomic value for initial traffic

internal/handlers/home.go

@@ -198,8 +198,8 @@ func (zr *Handlers) handleHome(resp http.ResponseWriter, req *http.Request) {
 	}
 	efficiency := response.ServedMB * 100 / denominator
 
-	if zr.initialTraffic > response.TrafficLogged {
-		zr.initialTraffic = response.TrafficLogged
+	if zr.initialTraffic.Load() > response.TrafficLogged {
+		zr.initialTraffic.Store(response.TrafficLogged)
 	}
 
 	out += fmt.Sprintf(`
@@ -250,7 +250,7 @@ func (zr *Handlers) handleHome(resp http.ResponseWriter, req *http.Request) {
 		response.NumGC,
 		response.PID,
 		response.TrafficLogged,
-		response.TrafficLogged-bToMb(uint64(zr.initialTraffic)),
+		response.TrafficLogged-bToMb(zr.initialTraffic.Load()),
 		response.RequestedMB,
 		response.ServedMB,
 		efficiency,

internal/handlers/router.go

@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"path/filepath"
 	"strings"
+	"sync/atomic"
 
 	"github.com/debridmediamanager/zurg/internal/config"
 	"github.com/debridmediamanager/zurg/internal/dav"
@@ -26,7 +27,7 @@ type Handlers struct {
 	api            *realdebrid.RealDebrid
 	workerPool     *ants.Pool
 	hosts          []string
-	initialTraffic uint64
+	initialTraffic atomic.Uint64
 	log            *logutil.Logger
 }
 
@@ -52,9 +53,9 @@ func AttachHandlers(router *chi.Mux, downloader *universal.Downloader, torMgr *t
 		log.Errorf("Failed to get traffic details: %v", err)
 		trafficDetails = make(map[string]int64)
 	}
-	hs.initialTraffic = 0
+	hs.initialTraffic.Store(uint64(0))
 	if _, ok := trafficDetails["real-debrid.com"]; ok {
-		hs.initialTraffic = uint64(trafficDetails["real-debrid.com"])
+		hs.initialTraffic.Store(uint64(trafficDetails["real-debrid.com"]))
 	}
 
 	if cfg.GetUsername() != "" {