Update Readme 2024-04-12T14:51:54Z

README.md

@@ -4,7 +4,7 @@
 
 ![GitHub Release](https://img.shields.io/github/v/release/mobizt/FirebaseClient) ![PlatformIO](https://badges.registry.platformio.org/packages/mobizt/library/FirebaseClient.svg) 
 
-`2024-04-12T08:53:46Z`
+`2024-04-12T14:51:54Z`
 
 ## Table of Contents
 
@@ -1105,6 +1105,9 @@ This library does not run any background process in FreeRTOS task or schedule ta
 
 To maintaining the async tasks, you have to place the code for `Maintain Authentication and Async Operation Queue` in the infinite loop e.g. main `loop()` function, timer or scheduler cyclically event's callback function or infinite loop in FreeRTOS task (as in ESP32).
 
+> [!WARNING]  
+> Don't use delay in the loop when async task is running because it will block the process in the queue to run.
+
 For ESP32's `FreeRTOS` task, the CPU Core 1 is recommend for safely operation even the library is async operation but the SSL/TLS handshake during establishing the new server connection of the SSL client is the blocking process which can leed to wdt reset error.
 
 **Example** for `Maintain Authentication and Async Operation Queue` in ESP32's `FreeRTOS` task in lambda function usage style.