Nacos, ZooKeeper and Dubbo are three different distributed system components. There are the following differences between them:
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Functional positioning: Nacos mainly provides functions such as service discovery, configuration management and service governance, while ZooKeeper is mainly a distributed coordination service, providing primitives such as distributed locks and distributed queues. Dubbo is a high-performance RPC framework.
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Data model: Nacos uses a tree structure similar to the Unix file system to organize data, supporting multi-layer namespaces and multi-tenants; ZooKeeper uses structures such as data trees and ZNode nodes to manage data; Dubbo mainly manages service information through the registration center .
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Storage method: Nacos supports multiple storage methods, including memory, local files, MySQL, etc.; ZooKeeper uses an in-memory database to store data; Dubbo's registration center can support multiple storage methods such as ZooKeeper and Redis.
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Protocol implementation: Nacos implements functions such as service registration and discovery through RESTful API and HTTP protocol, while ZooKeeper supports two protocols: Zab protocol and Paxos protocol, and Dubbo implements service invocation through Dubbo protocol.
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Ecological expansion: Nacos can be integrated with open source components such as Spring Cloud to provide more complete microservice solutions; Zookeeper can be integrated with big data ecological components such as Hadoop to implement applications such as distributed computing; Dubbo can be integrated with enterprise-level frameworks such as Spring to provide Complete enterprise-level service-oriented solutions.
Taken together, Nacos, ZooKeeper and Dubbo are all excellent distributed system components, with their unique advantages and application value in different scenarios. When using it, you need to select appropriate components to build a distributed system based on actual needs and scenarios.