diff --git a/nanomq/apps/broker.c b/nanomq/apps/broker.c
index c7eca8049..bcb1f044f 100644
--- a/nanomq/apps/broker.c
+++ b/nanomq/apps/broker.c
@@ -855,13 +855,14 @@ get_broker_db(void)
 int
 broker(conf *nanomq_conf)
 {
-	int        rv;
-	int        i, j, count;
+	int        rv, i;
+	uint64_t   num_work;
 	nng_socket sock;
 	nng_socket *bridge_sock;
 	nng_pipe   pipe_id;
 	// add the num of other proto
-	uint64_t num_ctx = nanomq_conf->parallel;
+	nanomq_conf->total_ctx = nanomq_conf->parallel;		// match with num of aio
+	num_work = nanomq_conf->parallel;					// match with num of works
 
 
 #if defined(SUPP_RULE_ENGINE)
@@ -943,7 +944,8 @@ broker(conf *nanomq_conf)
 		}
 		// set 4 ctx for HTTP as default
 		if (nanomq_conf->http_server.enable) {
-			num_ctx += HTTP_CTX_NUM;
+			nanomq_conf->total_ctx += HTTP_CTX_NUM;
+			num_work += HTTP_CTX_NUM;
 		}
 	}
 	log_debug("HTTP init finished");
@@ -969,12 +971,36 @@ broker(conf *nanomq_conf)
 		log_debug("Hook service started");
 	}
 
-	// bridging client
+	// caculate total ctx first
+	if (nanomq_conf->bridge_mode) {
+		for (size_t t = 0; t < nanomq_conf->bridge.count; t++) {
+			conf_bridge_node *node = nanomq_conf->bridge.nodes[t];
+			if (node->enable) {
+				// each bridge ctx is init with a broker ctx
+				nanomq_conf->total_ctx += node->parallel * 2;
+				num_work += node->parallel;
+			}
+		}
+
+#if defined(SUPP_AWS_BRIDGE)
+		for (size_t c = 0; c < nanomq_conf->aws_bridge.count; c++) {
+			log_debug("AWS bridgging service initialization");
+			conf_bridge_node *node =
+			    nanomq_conf->aws_bridge.nodes[c];
+			if (node->enable) {
+				nanomq_conf->total_ctx += node->parallel * 2;
+				num_work += node->parallel;
+			}
+		}
+#endif
+		log_trace("total ctx num: %ld", nanomq_conf->total_ctx);
+	}
+
+	// init bridging client
 	if (nanomq_conf->bridge_mode) {
 		for (size_t t = 0; t < nanomq_conf->bridge.count; t++) {
 			conf_bridge_node *node = nanomq_conf->bridge.nodes[t];
 			if (node->enable) {
-				num_ctx += node->parallel;
 				node->sock = (nng_socket *) nng_alloc(
 				    sizeof(nng_socket));
 #if defined(SUPP_QUIC)
@@ -988,21 +1014,10 @@ broker(conf *nanomq_conf)
 #endif
 			}
 		}
-
-#if defined(SUPP_AWS_BRIDGE)
-		for (size_t c = 0; c < nanomq_conf->aws_bridge.count; c++) {
-			log_debug("AWS bridgging service initialization");
-			conf_bridge_node *node =
-			    nanomq_conf->aws_bridge.nodes[c];
-			if (node->enable) {
-				num_ctx += node->parallel;
-			}
-		}
-#endif
 		log_debug("bridge init finished");
 	}
-	// MQTT Broker service
-	struct work **works = nng_zalloc(num_ctx * sizeof(struct work *));
+	// CTX for MQTT Broker service
+	struct work **works = nng_zalloc(num_work * sizeof(struct work *));
 	// create broker ctx
 	for (i = 0; i < nanomq_conf->parallel; i++) {
 		works[i] = proto_work_init(sock, inproc_sock, sock,
@@ -1060,9 +1075,9 @@ broker(conf *nanomq_conf)
 
 	// Init exchange part in hook
 	if (nanomq_conf->exchange.count > 0) {
-		hook_exchange_init(nanomq_conf, num_ctx);
+		hook_exchange_init(nanomq_conf, nanomq_conf->total_ctx);
 		// create exchange senders in hook
-		hook_exchange_sender_init(nanomq_conf, works, num_ctx);
+		hook_exchange_sender_init(nanomq_conf, works, nanomq_conf->total_ctx);
 		// TODO expose this
 		char url_zzz[128] = "tcp://127.0.0.1:10000";
 		nng_socket *mq_sock = nanomq_conf->exchange.nodes[0]->sock;
@@ -1123,7 +1138,7 @@ broker(conf *nanomq_conf)
 		}
 	}
 
-	for (i = 0; i < num_ctx; i++) {
+	for (i = 0; i < num_work; i++) {
 		server_cb(works[i]); // this starts them going (INIT state)
 	}
 
@@ -1180,7 +1195,7 @@ broker(conf *nanomq_conf)
 	bool is_testing = false;
 #endif
 
-#if (defined DEBUG) && (!defined ASAN)
+#if (defined DEBUG)  && (!defined ASAN)
 #if !(defined NANO_PLATFORM_WINDOWS)
 	struct sigaction  act;
 	i = 0;
@@ -1223,7 +1238,7 @@ broker(conf *nanomq_conf)
 			}
 			for (size_t t = 0; t < conf->bridge.count; t++) {
 				conf_bridge_node *node = conf->bridge.nodes[t];
-				size_t aio_count = (conf->parallel + node->parallel * 2);
+				size_t aio_count = conf->total_ctx;
 				if (node->enable) {
 					for (size_t i = 0; i < aio_count; i++) {
 						nng_aio_finish_error(node->bridge_aio[i], 0);
@@ -1240,12 +1255,12 @@ broker(conf *nanomq_conf)
 			// nng_free(
 			//     conf->bridge.nodes, sizeof(conf_bridge_node **));
 
-			for (size_t i = 0; i < num_ctx; i++) {
+			for (size_t i = 0; i < num_work; i++) {
 				nng_free(works[i]->pipe_ct,
 				    sizeof(struct pipe_content));
 				nng_free(works[i], sizeof(struct work));
 			}
-			nng_free(works, num_ctx * sizeof(struct work *));
+			nng_free(works, num_work * sizeof(struct work *));
 			break;
 		}
 		nng_msleep(6000);
@@ -1619,7 +1634,7 @@ broker_parse_opts(int argc, char **argv, conf *config)
 int
 broker_start(int argc, char **argv)
 {
-	int i, url, temp, rc, num_ctx = 0;
+	int i, url, temp, rc;
 	int pid = 0;
 
 	conf *nanomq_conf;
diff --git a/nanomq/bridge.c b/nanomq/bridge.c
index 934eed581..4d1d3aeb7 100644
--- a/nanomq/bridge.c
+++ b/nanomq/bridge.c
@@ -608,17 +608,16 @@ hybrid_cb(void *arg)
 		NANO_NNG_FATAL("nng_cv_alloc mem error", rv);
 		return;
 	}
-	uint32_t aio_cnt = bridge_arg->conf->parallel + node->parallel * 2;
+	// uint32_t aio_cnt = bridge_arg->conf->parallel + node->parallel;
 	// alloc an AIO for each ctx bridging use only
-	node->bridge_aio = nng_alloc(aio_cnt * sizeof(nng_aio *));
+	node->bridge_aio = nng_alloc(bridge_arg->conf->total_ctx * sizeof(nng_aio *));
 
-	for (uint32_t num = 0; num < aio_cnt; num++) {
+	for (uint32_t num = 0; num < bridge_arg->conf->total_ctx; num++) {
 		if ((rv = nng_aio_alloc(&node->bridge_aio[num], NULL, node)) !=
 		    0) {
 			NANO_NNG_FATAL("bridge_aio nng_aio_alloc", rv);
 		}
 	}
-	log_debug("parallel %d aios", aio_cnt);
 
 	char addr_back[160] = {'\0'};
 	if (0 != gen_fallback_url(node->address, addr_back)) {
@@ -1173,20 +1172,19 @@ bridge_client(nng_socket *sock, conf *config, conf_bridge_node *node)
 	}
 
 	// alloc an AIO for each ctx bridging use only
-	node->bridge_aio = nng_alloc(
-	    (config->parallel + node->parallel * 2) * sizeof(nng_aio *));
+	node->bridge_aio = nng_alloc(config->total_ctx * sizeof(nng_aio *));
 
 	node->sock = (void *) sock;
 	node->bridge_arg = (void *) bridge_arg;
 
-	for (uint32_t num = 0; num < (config->parallel + node->parallel * 2);
-	     num++) {
+	uint32_t num;
+	for ( num = 0; num < config->total_ctx; num++ ) {
 		if ((rv = nng_aio_alloc(
 		         &node->bridge_aio[num], bridge_send_cb, node)) != 0) {
 			NANO_NNG_FATAL("bridge_aio nng_aio_alloc", rv);
 		}
-		log_debug("parallel %d", num);
 	}
+	log_debug("parallel %d", num);
 	return 0;
 }
 
diff --git a/nanomq/include/broker.h b/nanomq/include/broker.h
index 9f91e21de..f56ce6471 100644
--- a/nanomq/include/broker.h
+++ b/nanomq/include/broker.h
@@ -33,12 +33,9 @@ struct work {
 		END,  // Clear state and cache before disconnect
 		CLOSE // sending disconnect packet and err code
 	} state;
-	// 0x00 mqtt_broker
-	// 0x01 mqtt_bridge
-	uint8_t proto;
-	// MQTT version cache
-	uint8_t     proto_ver;
-	uint8_t     flag; // flag for webhook & rule_engine
+	uint8_t     proto;		  // logic proto
+	uint8_t     proto_ver;   // MQTT version cache
+	uint8_t     flag;        // flag for webhook & rule_engine
 	nng_aio *   aio;
 	nng_msg *   msg;
 	nng_msg **  msg_ret;
diff --git a/nng b/nng
index e51f38c6f..cf88701da 160000
--- a/nng
+++ b/nng
@@ -1 +1 @@
-Subproject commit e51f38c6fa6fd0370e5072123f86cdf49480cb59
+Subproject commit cf88701dad00dc8fff0c668103cdc7e1d1919e5d