simplify RedisConfigDiffers func, fix dedupe against legacy db

main.go

@@ -58,10 +58,7 @@ func (that *ProjectBackfeedManager) RedisConfigDiffers(new *ProjectRedisConfig)
 	if that.ProjectConfig.RedisConfig == nil && new == nil {
 		return false
 	}
-	if that.ProjectConfig.RedisConfig == nil || new == nil || that.ProjectConfig.RedisConfig.Host != new.Host || that.ProjectConfig.RedisConfig.Port != new.Port || that.ProjectConfig.RedisConfig.Pass != new.Pass {
-		return true
-	}
-	return false
+	return that.ProjectConfig.RedisConfig == nil || new == nil || *that.ProjectConfig.RedisConfig != *new
 }
 
 func (that *ProjectBackfeedManager) PushItem(ctx context.Context, item *BackfeedItem) bool {
@@ -196,7 +193,7 @@ func (that *ProjectBackfeedManager) Do() {
 				log.Printf("unable to dedupe against %s legacy backfeed: %s", that.Name, err)
 			} else {
 				rawResArray, ok := rawRes.([]interface{})
-				if ok && len(sAddItems) != len(rawResArray) {
+				if ok && len(sAddItems) == len(rawResArray) {
 					var filteredSAddItems []interface{}
 					for i, vi := range rawResArray {
 						v, ok := vi.(int64)
@@ -520,7 +517,7 @@ func main() {
 	serveErrChan := make(chan error)
 	go func() {
 		s := &http.Server{
-			Addr:           ":21581",
+			Addr:           os.Getenv("HTTP_ADDR"),
 			IdleTimeout:    1 * time.Hour,
 			MaxHeaderBytes: 1 * 1024 * 1024,
 			Handler:        r,