Comparison between CoAP and MQTT Protocols
Contents
Summary
- The Key Difference between CoAP and MQTT Protocols are below the table.
Comparison Chart
| CoAP | MQTT | |
|---|---|---|
| 1 | CoAP stands for Constrained Application Protocol. | MQTT stands for Message query telemetry transport. |
| 2 | CoAP uses the Request-Response model. | MQTT uses the Publish-Subscribe model. |
| 3 | CoAP uses UDP protocol(User Datagram Protocol ). | MQTT uses TCP protocol(Transmission Control Protocol). |
| 4 | The communication model is One-to-one. | The communication model is Many-to-many. |
| 5 | The security type is DTLS(Datagram Transport Layer Security). | The security type is SSL/TLS. |
| 6 | Effectiveness in LLN is excellent. | Effectiveness in LLN is low. |
| 7 | Use both Asynchronous and Synchronous messages. | Uses only Asynchronous messages. |
| 8 | C0AP header size 4 bytes. | MQTT header size 2 bytes. |
CoAP Advantages
- Lightweight and fast
- Low overhead
- Support for multicasting
CoAP Disadvantages
- Not as reliable as TCP based
MQTT Advantages
- Simple management
- Scalability
- Robust communication
MQTT Disadvantages
- Higher overhead, no multicasting MQTT support