Tendis is a high-performance distributed storage system which is fully compatible with the Redis protocol. It uses RocksDB as the storage engine, and all data is stored to disks through RocksDB. Users can access Tendis using a Redis client, and the application hardly needs to be changed. In addition, Tendis supports storage capacity far exceeding memory, which can greatly reduce user storage costs. Similar to Redis clusters, Tendis uses a decentralized distributed solution. The gossip protocol is used for communication between nodes, and all nodes in a cluster can be routed to the correct node when a user accesses. Cluster nodes support automatic discovery of other nodes, detect faulty nodes, and ensure the application is almost not affected when the master node failed.