Nowadays, with the growing business scale, the need for middleware supporting millions of instances has become increasingly prominent. How to maintain the stability and performance of the framework in a super-large-scale distributed cluster has become whether the underlying middleware can support the business trend The key to the next stage. Dubbo 3 hopes to provide flexible governance capabilities, provide capacity evaluation based on the server, implement load balancing based on reverse push, ensure that the cluster will not be overwhelmed under high traffic conditions, and provide an intelligent fuse mechanism to ensure that the server can process requests in a timely and efficient manner.

Project requirements:

• Support capacity evaluation based on indicators such as load and RT
• Support the distribution of the remaining access capacity to the consumer
• Support load balancing capability

Skills requirement:

• Proficiency in Java
• Familiar with load balancing algorithm

如今，在业务规模日益增长的情况下，支持百万级别实例中间件的需求日益凸显，如何在超大规模分布式集群中保持框架的稳定性和性能，则成为了底层中间件能否支撑业务走向下一个阶段的关键。Dubbo 3 希望提供柔性治理的能力，提供基于服务端的容量评估，基于反推实现负载均衡，保证大流量情况下不会压垮集群，提供智能熔断机制，保障服务端能及时高效处理请求。

产出要求：

• 支持基于负载、RT 等指标的容量评估
• 支持将剩余访问容量分发给消费端
• 支持负载均衡能力

技术要求：

• 熟练使用 Java
• 熟悉负载均衡算法