#kafka

2 results

Explainer June 14, 2026

Why Is Kafka Fast? Sequential I/O and Zero-Copy Explained

Kafka's speed comes from two counterintuitive design choices: deliberately writing to disk (not memory) but using sequential I/O, and Zero-Copy to move data from disk to NIC without CPU involvement.

#kafka #system-design #architecture #performance #message-queue

tech 📚 Kafka 為什麼這麼快

Deep Dive June 10, 2026

Why Is Kafka Fast? Part 2: Partitions, Replication, and Consumer Groups

Kafka's horizontal scalability comes from partition design: each partition is an independent log, Consumer Groups enable parallel consumption, and replication provides durability without a large performance penalty.

#kafka #performance #system-design #architecture #distributed-systems