Tag: design-concurrency

All the articles with the tag "design-concurrency".

• System Design - How MVCC (Multi-Version Concurrency Control) Works

  12 Apr, 2026

  How MVCC works in databases: the concurrency problem it solves, snapshot isolation, PostgreSQL's tuple versioning with xmin/xmax, MySQL InnoDB's undo log and ReadView, garbage collection, and source code walkthrough.

• System Design - How Consistent Hashing Works

  10 Apr, 2026

  How consistent hashing works: the problem with naive hashing, the hash ring, virtual nodes, real-world usage in DynamoDB and Memcached, and a source code walkthrough of Go's jump consistent hash and ketama implementations.

• System Design - How TiDB TSO (Timestamp Oracle) Works

  28 Mar, 2026

  How TiDB's Timestamp Oracle (TSO) works: architecture, 64-bit timestamp layout, allocation algorithm, etcd persistence, client batching, and source code walkthrough from the tikv/pd repository.

• System Design - Event Loop for Concurrent Applications

  6 Jan, 2025

  event loop system design pattern/construct event loop (message dispatcher), reactor/actor pattern, non-blocking mechanism for concurrent applications