fix(lint): Delete wait group and Add retry

- Deleted wait group
- Added retry in cache

backend/cache.go

@@ -1,17 +1,24 @@
 package backend
 
 import (
+	"time"
+
 	"gitlab.com/gaming0skar123/go/pingbot/database/mongo"
 )
 
 var cacheURL []string
 
-func cache() {
+func cache(retry int) {
 	cacheURL = cacheURL[:0]
 
 	results, err := mongo.GetAll()
 	if checkErr(err, "get keys from db") {
-		return
+		if retry == 5 {
+			time.Sleep(500 * time.Millisecond)
+			cache(retry + 1)
+		} else {
+			return
+		}
 	}
 
 	for _, value := range results {

backend/ping.go

@@ -3,7 +3,6 @@ package backend
 import (
 	"context"
 	"net/http"
-	"sync"
 	"time"
 
 	"gitlab.com/gaming0skar123/go/pingbot/common"
@@ -17,24 +16,17 @@ var (
 
 func ping() {
 	if cacheRetry >= config.Toml.Backend.Cache {
-		cache()
+		cache(0)
 		cacheRetry = 0
 	}
 	cacheRetry++
 
-	var wg sync.WaitGroup
-
 	for _, url := range cacheURL {
-		go loop(wg, url)
+		go loop(url)
 	}
-
-	wg.Wait()
 }
 
-func loop(wg sync.WaitGroup, url string) {
-	wg.Add(1)
-	defer wg.Done()
-
+func loop(url string) {
 	// Timeout 1 minute
 	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
 	defer cancel()

backend/ticker.go

@@ -8,7 +8,7 @@ import (
 
 func Ticker() {
 	// On Start
-	cache()
+	cache(0)
 	ping()
 
 	ticker := time.NewTicker(config.Toml.Backend.Ping * time.Minute)