diff --git a/main.go b/main.go
index 49c51ad..f97b00c 100644
--- a/main.go
+++ b/main.go
@@ -86,15 +86,15 @@ func (that *ProjectBackfeedManager) PopItem(blocking bool) (*BackfeedItem, bool)
 		select {
 		case <-that.Context.Done():
 			return nil, false
-		case item := <-that.C:
-			return item, true
+		case item, ok := <-that.C:
+			return item, ok
 		}
 	} else {
 		select {
 		case <-that.Context.Done():
 			return nil, false
-		case item := <-that.C:
-			return item, true
+		case item, ok := <-that.C:
+			return item, ok
 		default:
 			return nil, false
 		}
@@ -511,6 +511,7 @@ func main() {
 		log.Panicf("invalid REDIS_LEGACY url: %s", err)
 	}
 	legacyRedisOptions.ReadTimeout = 15 * time.Minute
+	legacyRedisOptions.PoolSize = 128
 	legacyRedisClient := redis.NewClient(legacyRedisOptions)
 
 	backfeedRedisClient := redis.NewClusterClient(&redis.ClusterOptions{
@@ -518,6 +519,7 @@ func main() {
 		Username:    os.Getenv("REDIS_BACKFEED_USERNAME"),
 		Password:    os.Getenv("REDIS_BACKFEED_PASSWORD"),
 		ReadTimeout: 15 * time.Minute,
+		PoolSize:    256,
 	})
 
 	legacyRedisMetricsHook := redisprom.NewHook(