Productores publican (escriben) eventos en temas de Kafka, y consumidores se suscriben a (leen) eventos de ellos. Entender cómo funcionan — incluyendo particionamiento, offsets y grupos de consumidores — es fundamental para usar Kafka.
Productores — escribiendo eventos
PRODUCERS publish events to TOPICS:
→ send a record (key, value) to a topic
→ the key determines the PARTITION (same key → same partition → ordering for that key);
no key → distributed (round-robin)
→ can configure ACKNOWLEDGMENTS (acks) for durability (wait for replicas to confirm)
→ batching, compression for throughput
