What are the responsibilities of a zookeeper?

The main responsibilities of a zookeeper include the following aspects:

1. Distributed coordination service: Zookeeper can be used as a coordination service in distributed systems to manage and track the status, configuration information, and metadata of each node. It offers a reliable and high-performance distributed coordination mechanism, including features like election algorithms, distributed locks, and distributed queues.
2. Naming service: Zookeeper provides a unified naming space for distributed systems, allowing nodes to access and locate services through a single path.
3. Configuration Management: Zookeeper can be utilized to manage configuration information for distributed systems, including the publishing and updating of dynamic configurations, as well as notifying changes in configurations.
4. Cluster management: Zookeeper can be used to manage the nodes and cluster status, health conditions, etc. in distributed systems, enabling timely detection of faults and recovery to ensure high availability and stability of the cluster.
5. Distributed lock: Zookeeper offers a mechanism for distributed locks, which can be used to achieve mutual exclusion in distributed systems, ensuring the safety of shared resources.

In general, Zookeeper is a high-performance, reliable distributed coordination service that can be used to manage and coordinate various nodes in a distributed system. It provides common distributed algorithms and mechanisms to help simplify the development and deployment of distributed systems for developers.