Podstawowe koncepcje Kafki obejmują topics (kategorie zdarzeń), partitions (jednostki równoległości w ramach topics), brokers (serwery), producers (pisanie) i consumers (odczyt). Zrozumienie tych koncepcji jest fundamentalne do pracy z Kafką.
Podstawowe koncepcje
TOPIC → a named category/stream of events (like a "channel" — e.g. "orders", "clicks")
→ producers write to topics; consumers read from them
PARTITION → a topic is split into PARTITIONS (ordered, append-only logs):
→ the unit of PARALLELISM and scaling; events distributed across partitions
→ order is guaranteed WITHIN a partition (not across partitions)
BROKER → a Kafka SERVER (stores data, serves clients); a CLUSTER = multiple brokers
PRODUCER → writes (publishes) events to topics
CONSUMER → reads (subscribes to) events from topics
