Smart City Dispatch · Glossary
MQTT QoS
MQTT defines three delivery quality levels: QoS 0 aims for at-most-once delivery, QoS 1 for at-least-once delivery, and QoS 2 for exactly-once delivery between protocol peers. Higher guarantees require more protocol overhead.
MQTT QoS
MQTT defines three delivery quality levels: QoS 0 aims for at-most-once delivery, QoS 1 for at-least-once delivery, and QoS 2 for exactly-once delivery between protocol peers. Higher guarantees require more protocol overhead.
Smart-city relevance: Choose QoS according to application consequences, not by assuming “higher is always better.”
Related: MQTT