What are the Dubbo protocols?

Dubbo protocols include: 1. Dubbo protocol; 2. RMI protocol; 3. Hessian protocol; 4. HTTP protocol; 5. Webservice protocol; 6. Thrift protocol; 7. Memcached protocol; 8. Redis protocol; 9. Dubbo RESTful protocol; 10. Dubbo-gRPC; 11. Dubbo-MQTT. Detailed introduction: 1. Dubbo protocol, the protocol used by Dubbo by default, is based on a single long connection and NIO asynchronous communication, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Dubbo is a high-performance, lightweight open source Java RPC framework used to build efficient and stable service-oriented applications. Dubbo protocol is the communication protocol used in the Dubbo framework. It provides multiple protocol support to better meet the needs of different scenarios. The following are the main protocols supported by Dubbo:

1. Dubbo protocol: The protocol used by Dubbo by default, based on a single long connection and NIO asynchronous communication, suitable for service calls with small data volume and large concurrency. And the number of service consumer machines is much larger than the number of service provider machines. It uses tbremoting interaction based on mina1.1.7 hessian3.2.1, which is suitable for situations where the incoming and outgoing parameter data packets are small. It is not recommended for transmitting large files or oversized strings.

2. RMI protocol: Based on the Java RMI (remote method invocation) protocol, data transmission is carried out through Java object serialization, and has good cross-platform performance.

3. Hessian protocol: Based on the Hessian serialization framework and transmitting data through HTTP, it is suitable for scenarios where service providers and consumers are in the same JVM process.

4. HTTP protocol: Communication is based on the HTTP protocol and can communicate with the server through the HTTP client.

5. Webservice protocol: The Webservice protocol based on the SOAP specification transmits data through XML format.

6. Thrift protocol: Based on the Apache Thrift framework, it uses a custom binary protocol for data transmission, with good performance and cross-language support.

7. Memcached protocol: Cache synchronization is implemented based on the Memcached protocol, which is suitable for service calls in caching scenarios.

8. Redis protocol: Realize data storage and synchronization based on Redis protocol, suitable for scenarios using Redis cache.

9. Dubbo RESTful protocol: RESTful style interface based on Dubbo protocol, which can use HTTP or Websocket for communication.

10. Dubbo-gRPC: Dubbo implementation based on gRPC protocol. gRPC is a high-performance, open source, universal RPC framework that can support multiple programming languages. Through Dubbo-gRPC, service invocation based on the gRPC protocol can be implemented to improve communication performance between services.

11. Dubbo-MQTT: Dubbo implementation based on MQTT protocol. MQTT is a lightweight publish/subscribe message transmission protocol and is widely used in the field of Internet of Things. Through Dubbo-MQTT, service invocation based on the MQTT protocol can be realized, which is suitable for scenarios that require low power consumption, low bandwidth, and high reliability.

To sum up, the Dubbo protocol has many implementation methods, and you can choose a suitable protocol according to actual needs. At the same time, Dubbo also provides a variety of advanced features and configurations to meet performance, reliability and scalability requirements in different scenarios.

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