This is a client for dynamic DNS services, aimed at ESP (ESP32, etc) devices. Your node can use such a service to make its IP address known as a public DNS name, so you can find it, and use it from applications.
MetricsModule is a C++ class designed for collecting and sending metrics data from an ESP32-based device. The module supports buffering metrics in JSON format and sending them to a specified database URL. It integrates with FreeRTOS for task management and leverages ESP-IDF for network and logging capabilities.