delivery guarantees

Spring Full-Stack Practical Cases

Apr 12, 2021 · Big Data

Master Kafka’s Delivery Guarantees: At‑Most, At‑Least, and Exactly‑Once Explained

This article explains Kafka’s three delivery semantics—At most once, At least once, and Exactly once—from both producer and consumer perspectives, details the required configuration settings, and discusses how Kafka ensures idempotence, transaction support, and prevents data loss, duplication, and ordering issues.