This article introduces the role of each connection parameter in MQTT and helps developers take their first steps in using MQTT.

This article introduces the Keep Alive mechanism in the MQTT protocol and how to use it in EMQX. Developers can use this feature to ensure the stability of MQTT connections.

In this article, we will introduce the QoS design of MQTT messages in the IoV scenario, which guarantees the quality of data transmission.

In this article, we will describe how to design the topic of MQTT messages in the process of building the TSP platform of IoV.

MQTT Topic Alias allows users to reduce the possibly long and repeatedly used topic name to a 2-byte integer, so as to reduce the bandwidth consumption when publishing messages.

This article introduces the MQTT protocol and its advantages, and demonstrates the use of MQTT in Elixir.

User Properties are the user-defined properties that allow users to add their metadata to MQTT messages to expand more application scenarios.

MQTT 5.0 adds a new feature enhanced authentication, which includes query/response style authentication can implement bi-directional authentication of the client and broker.

MQTT 5.0 brings many new features, this article will give an introduction to the use of the new feature "flow control" in an easy-to-understand way.

Compared with MQTT 3.1.1, MQTT 5.0 protocol adds many properties, which are distributed in variable headers and payloads of packet.