fix: align group management APIs

server/main.go

@@ -146,6 +146,8 @@ var globals struct {
 	sessionStore *SessionStore
 	// Cluster data.
 	cluster *Cluster
+	// Unique node ID used by Redis realtime fanout when native clustering is disabled.
+	nodeID string
 	// gRPC server.
 	grpcServer *grpc.Server
 	// Plugins.
@@ -346,6 +348,8 @@ type configType struct {
 	ExpvarPath string `json:"expvar"`
 	// URL path for internal server status. Disabled if the path is blank.
 	ServerStatusPath string `json:"server_status"`
+	// Unique IM node ID for Redis realtime fanout. Defaults to IM_NODE_ID or HOSTNAME.
+	NodeID string `json:"node_id"`
 	// Take IP address of the client from HTTP header 'X-Forwarded-For'.
 	// Useful when tinode is behind a proxy. If missing, fallback to default RemoteAddr.
 	UseXForwardedFor bool `json:"use_x_forwarded_for"`
@@ -466,6 +470,7 @@ func main() {
 	// Initialize cluster and receive calculated workerId.
 	// Cluster won't be started here yet.
 	workerId := clusterInit(config.Cluster, clusterSelf)
+	globals.nodeID = resolveIMNodeID(config.NodeID)
 
 	if *pprofFile != "" {
 		*pprofFile = toAbsolutePath(curwd, *pprofFile)
@@ -740,14 +745,12 @@ func main() {
 	globals.sessionStore = NewSessionStore(idleSessionTimeout + 15*time.Second)
 	// The hub (the main message router)
 	globals.hub = newHub()
-	startRedisGroupFanout(context.Background())
+	startRedisRealtimeFanout(context.Background())
 	startKafkaAdminCommandConsumer()
 	startKafkaConfigEventConsumer()
 	startKafkaCacheInvalidateConsumer()
 	startKafkaMessagePersistConsumer()
 	startKafkaDeadLetterConsumer()
-	stopExternalBusinessEvents := startIMExternalBusinessEventPoller()
-	defer stopExternalBusinessEvents()
 
 	// Start accepting cluster traffic.
 	if globals.cluster != nil {