Apache Kafka Part 1: What Stream Processing Is and Why It Changes Everything
Kafka is not a typical message broker — it’s the distributed nervous system powering Netflix, LinkedIn, and Uber. It handles millions of events per second without losing a single one, with guaranteed ordering per partition. This first installment explains the core concepts (topics, partitions, offsets, consumer groups) using a real use case: the 50 ARPA Piedmont stations from the Smart City project at Politecnico di Torino.