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This article explains how to select and implement routing keys for database sharding in a food‑delivery order system, covering supported scenarios, single‑ and multi‑database strategies, hash‑based distribution for both user and merchant data, and practical flow diagrams to ensure balanced and efficient data access.
The article explains how to choose and implement routing keys after database sharding for an online food ordering system, covering supported scenarios, hash‑based routing strategies for both user and merchant sides, multi‑database/table selection, and practical data‑flow diagrams.
This article presents an in‑depth overview of Zeppelin, a high‑availability, high‑performance block storage service, covering its motivation, online vs offline storage distinctions, data distribution strategies, centralized meta‑server design, replication policies, RocksDB‑based storage engine, Raft‑based consistency protocol, threading model, client request flow, and fault‑handling mechanisms.