☕ Kafka Café

Every click is an API call. Every API call is a Kafka message. Every message ends up as Parquet in S3, queryable with Athena.

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Event stream (this browser)

Browser→CloudFront→API Lambda→ Kafka→Consumer Lambda→S3 Parquet→Athena

Files land in events/year=/month=/day=/hour=/ within about a minute (consumer batching window).