diff --git a/plugin/business/pangu-http/src/pangu_web_cache.cpp b/plugin/business/pangu-http/src/pangu_web_cache.cpp
index 50e720b..8f89d93 100644
--- a/plugin/business/pangu-http/src/pangu_web_cache.cpp
+++ b/plugin/business/pangu-http/src/pangu_web_cache.cpp
@@ -1143,7 +1143,8 @@ int web_cache_async_query(struct cache_handle* handle, unsigned int thread_id,
 	query_ctx->ref_handle=handle;
 	query_ctx->url=tfe_strdup(request->req_spec.url);
 
-	p=future_to_promise(f);
+	p=future_to_promise(f);	
+	promise_allow_many_successes(p);
 	promise_set_ctx(p, query_ctx, cache_query_ctx_free_cb);
 	
 	ATOMIC_INC(&(handle->stat_val[STAT_CACHE_QUERYING]));