5.3 Distributed-System Partitioning: Routing Components

1. client

• The client locally stores the relationship between partitions and server nodes and directly requests the correct node.

2. proxy

• The client requests the routing layer, and the routing layer forwards the request to the correct node.

3. server

• The client requests any server node, and that server node forwards the request to the correct node.

4. Examples

• MySQL uses proxy or client.
• Redis uses client + server.
• Kafka uses client + server.
• ZooKeeper does not use partitioning.
• Elasticsearch uses server.