1. Similarities
Both Dubbo and Feign rely on registry and load balancing.
Two, the difference
1. Agreement
Dubbo:
支持多传输协议(Dubbo、Rmi、http、redis等等),可以根据业务场景选择最佳的方式。非常灵活。
默认的Dubbo协议:利用Netty,TCP传输,单一、异步、长连接,适合数据量小、高并发和服务提供者远远少于消费者的场景。
Feign:
Based on Http transmission protocol, short connection, not suitable for high concurrent access.
2. Load balancing
Dubbo:
支持4种算法(随机、轮询、活跃度、Hash一致性),而且算法里面引入权重的概念。
配置的形式不仅支持代码配置,还支持Dubbo控制台灵活动态配置。
负载均衡的算法可以精准到某个服务接口的某个方法。
Feign:
只支持N种策略:轮询、随机、ResponseTime加权。
负载均衡算法是Client级别的。
3. Fault tolerance strategy
Dubbo:
Support a variety of fault tolerance strategies: failover, failfast, brodecast, fork, etc., and also introduce configuration parameters such as retry times and timeout.
Feign:
Using the fuse mechanism to achieve fault tolerance, the processing method is different.