Architektura Kafky se skládá z clusteru brokerů (serverů) ukládajících dělené, replikované topics, s producenty píšícími a consumenty čtoucími, koordinovanými správou metadat (historicky ZooKeeper, nyní KRaft). Pochopení architektury objasňuje, jak Kafka funguje jako distribuovaný systém.
Komponenty
BROKERS → Kafka SERVERS forming a CLUSTER:
→ store topic partitions (the data); serve producers and consumers
→ a cluster of multiple brokers → distributes data and load; scales horizontally
TOPICS / PARTITIONS → topics split into partitions, distributed across brokers
PRODUCERS → write events to topics (to partition leaders)
CONSUMERS (in groups) → read events from partitions
COORDINATION → metadata, cluster state, leader election:
→ historically ZOOKEEPER; now KRAFT (Kafka's own built-in consensus, removing ZooKeeper)
