diff --git a/plugin/business/pangu-http/src/pangu_http.cpp b/plugin/business/pangu-http/src/pangu_http.cpp
index d4ffe81..1fb17b0 100644
--- a/plugin/business/pangu-http/src/pangu_http.cpp
+++ b/plugin/business/pangu-http/src/pangu_http.cpp
@@ -63,6 +63,7 @@ enum pangu_http_stat
 	STAT_ACTION_PRE_REPLACE,
 	STAT_ACTION_REPLACE,
 	STAT_ACTION_WHITELSIT,
+	STAT_SUSPENDING,
 	__PG_STAT_MAX
 };
 struct pangu_rt
@@ -77,6 +78,7 @@ struct pangu_rt
 	char * reject_page;
 	int page_size;
 
+	long long suspend_max;
 	int cache_enabled;
 	struct cache_handle* cache;
 
@@ -197,6 +199,7 @@ static void pangu_http_stat_init(struct pangu_rt * pangu_runtime)
 	spec[STAT_ACTION_PRE_REPLACE]="pre_replace";
 	spec[STAT_ACTION_REPLACE]="replace";
 	spec[STAT_ACTION_WHITELSIT]="whitelist";
+	spec[STAT_SUSPENDING]="suspending";
 
 	for(i=0;i<__PG_STAT_MAX;i++)
 	{
@@ -313,7 +316,7 @@ int pangu_http_init(struct tfe_proxy * proxy)
 {
 	const char * profile = "./conf/pangu/pangu_pxy.conf";
 	const char * logfile = "./log/pangu_pxy.log";	
-	int table_id=0;
+	int table_id=0, temp=0;
 	
 	g_pangu_rt = ALLOC(struct pangu_rt, 1);
 	g_pangu_rt->thread_num = tfe_proxy_get_work_thread_count();
@@ -365,6 +368,9 @@ int pangu_http_init(struct tfe_proxy * proxy)
 	MESA_load_profile_string_def(profile, "TEMPLATE", "PAGE_451", page_path, sizeof(page_path),
 		"./resource/pangu/HTTP451.html");
 	g_pangu_rt->tpl_451 = ctemplate::Template::GetTemplate(page_path, ctemplate::DO_NOT_STRIP);
+	
+	MESA_load_profile_int_def(profile, "TANGO_CACHE", "suspend_max", &(temp), 1024*1024);
+	g_pangu_rt->suspend_max=temp;
 
 	MESA_load_profile_int_def(profile, "TANGO_CACHE", "enable_cache", &(g_pangu_rt->cache_enabled), 1);
 	if(g_pangu_rt->cache_enabled)
@@ -1083,6 +1089,7 @@ static void cache_read_on_succ(future_result_t * result, void * user)
 			ctx->cache_result_declared_sz=meta->content_length;
 			ctx->resumed_cb=dummy_resume;
 			tfe_http_session_resume(ctx->ref_session);
+			ATOMIC_DEC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 			
 			ctx->cached_response=tfe_http_session_response_create(ctx->ref_session, 200);		
 			tfe_http_std_field_write(ctx->cached_response, TFE_HTTP_CONT_TYPE, meta->content_type);
@@ -1116,6 +1123,7 @@ static void cache_read_on_succ(future_result_t * result, void * user)
 			ctx->pending_result=PENDING_RESULT_MISS;
 			ctx->resumed_cb=dummy_resume;
 			tfe_http_session_resume(ctx->ref_session);
+			ATOMIC_DEC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 			future_destroy(ctx->f_cache_query);
 			ctx->f_cache_query=NULL;
 			break;
@@ -1133,6 +1141,7 @@ static void cache_read_on_fail(enum e_future_error err, const char * what, void
 	{
 		tfe_http_session_resume(ctx->ref_session);
 		ctx->resumed_cb=dummy_resume;
+		ATOMIC_DEC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 	}
 	else
 	{
@@ -1149,6 +1158,7 @@ static void cache_pend_on_succ(future_result_t * result, void * user)
 	meta=cache_pending_result_read_meta(result);
 	ctx->resumed_cb=dummy_resume;
 	tfe_http_session_resume(ctx->ref_session);	
+	ATOMIC_DEC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 	future_destroy(ctx->f_cache_pending);
 	ctx->f_cache_pending=NULL;
 	if(meta==NULL)
@@ -1193,7 +1203,8 @@ static void cache_pend_on_fail(enum e_future_error err, const char * what, void
 	struct pangu_http_ctx * ctx = (struct pangu_http_ctx *)user;
 
 	ctx->pending_result=PENDING_RESULT_FOBIDDEN;
-	tfe_http_session_resume(ctx->ref_session);	
+	tfe_http_session_resume(ctx->ref_session);
+	ATOMIC_DEC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 	ctx->resumed_cb=dummy_resume;
 	future_destroy(ctx->f_cache_pending);
 	ctx->f_cache_pending=NULL;
@@ -1203,6 +1214,11 @@ static void cache_pend_on_fail(enum e_future_error err, const char * what, void
 
 void cache_pend(const struct tfe_http_session * session,	unsigned int thread_id, struct pangu_http_ctx * ctx)
 {
+	if(g_pangu_rt->stat_val[STAT_SUSPENDING]>g_pangu_rt->suspend_max)
+	{
+		ctx->pending_result=PENDING_RESULT_FOBIDDEN;
+		return;
+	}
 	ctx->f_cache_pending=future_create("cache_pend", cache_pend_on_succ, cache_pend_on_fail, ctx);	
 	ctx->ref_session=tfe_http_session_allow_write(session);
 	ctx->pending_result=web_cache_async_pending(g_pangu_rt->cache, thread_id, session->req, &(ctx->cmid), ctx->f_cache_pending);
@@ -1210,6 +1226,7 @@ void cache_pend(const struct tfe_http_session * session,	unsigned int thread_id,
 	{
 		case PENDING_RESULT_REVALIDATE:
 			tfe_http_session_suspend(ctx->ref_session);
+			ATOMIC_INC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 			break;
 		case PENDING_RESULT_ALLOWED:			
 		case PENDING_RESULT_FOBIDDEN:
@@ -1224,12 +1241,17 @@ void cache_pend(const struct tfe_http_session * session,	unsigned int thread_id,
 }
 void cache_read(const struct tfe_http_session * session,	unsigned int thread_id, struct pangu_http_ctx * ctx)
 {
+	if(g_pangu_rt->stat_val[STAT_SUSPENDING]>g_pangu_rt->suspend_max)
+	{
+		return;
+	}
 	ctx->f_cache_query=future_create("cache_read", cache_read_on_succ, cache_read_on_fail, ctx);
 	int ret=web_cache_async_read(g_pangu_rt->cache, thread_id, session->req, &(ctx->cmid), ctx->f_cache_query);
 	if(ret==0)
 	{
 		ctx->ref_session=tfe_http_session_allow_write(session);
 		tfe_http_session_suspend(ctx->ref_session);
+		ATOMIC_INC(&(g_pangu_rt->stat_val[STAT_SUSPENDING]));
 	}
 	else
 	{
diff --git a/plugin/business/pangu-http/src/pangu_web_cache.cpp b/plugin/business/pangu-http/src/pangu_web_cache.cpp
index 551214a..9595487 100644
--- a/plugin/business/pangu-http/src/pangu_web_cache.cpp
+++ b/plugin/business/pangu-http/src/pangu_web_cache.cpp
@@ -82,6 +82,7 @@ struct cache_param
 	time_t inactive_time_sec;
 	size_t max_cache_size;
 	size_t max_cache_obj_size;
+	size_t min_cache_obj_size;
 	pthread_mutex_t lock;
 };
 struct cache_bloom
@@ -573,6 +574,9 @@ void cache_param_new(int idx, const struct Maat_rule_t* rule, const char* srv_de
 
 	item=cJSON_GetObjectItem(json,"max_cache_obj_size");
 	if(item && item->type==cJSON_String) param->max_cache_obj_size=storage_unit_byte(item->valuestring);
+	
+	item=cJSON_GetObjectItem(json,"min_cache_obj_size");
+	if(item && item->type==cJSON_String) param->min_cache_obj_size=storage_unit_byte(item->valuestring);
 		
 	cJSON_Delete(json);
 	*ad=param;
@@ -723,11 +727,16 @@ struct cache_handle* create_web_cache_handle(const char* profile_path, const cha
 	cache->default_cache_policy.ignore_req_nocache=0;
 	cache->default_cache_policy.ignore_res_nocache=0;
 	cache->default_cache_policy.force_caching=0;
-	cache->default_cache_policy.min_use=0;
 	cache->default_cache_policy.pinning_time_sec=0;
 	cache->default_cache_policy.inactive_time_sec=0;
 	cache->default_cache_policy.max_cache_size=0;
-	cache->default_cache_policy.max_cache_obj_size=1024*1024*1024;//<1GB by default
+
+	MESA_load_profile_int_def(profile_path, section, "min_use", &(cache->default_cache_policy.min_use), 0);	
+	MESA_load_profile_int_def(profile_path, section, "max_cache_obj_size", &(temp), 1024*1024*1024);
+	cache->default_cache_policy.max_cache_obj_size=temp; //<1GB by default
+
+	MESA_load_profile_int_def(profile_path, section, "min_cache_obj_size", &(temp), 16*1024);
+	cache->default_cache_policy.min_cache_obj_size=temp;// > 16kb by default
 
 	if(cache->cache_policy_enabled)
 	{
@@ -1246,6 +1255,7 @@ struct cache_update_context* web_cache_write_start(struct cache_handle* handle,
 		case UNDEFINED:
 			if(_mid->shall_bypass 
 				|| (param->max_cache_obj_size!=0 && content_len > param->max_cache_obj_size)
+				|| (param->min_cache_obj_size > content_len)
 				|| (!param->cache_cookied_cont && _mid->has_cookie) 
 				|| (!param->cache_html && _mid->is_html))
 			{