Before diving into the code, you'll need to have Apache Storm and Kafka setup, alongside Scala and SBT for project building.
A Spout in Apache Storm is responsible for emitting tuples into the topology, with user activity and inventory updates sourced from Kafka.
To join data from the two streams, we use a JoinBolt to combine user activity and inventory updates to emit product recommendations when products are available.
The RecommendationBolt processes the joined data and outputs relevant product recommendations based on user activity, ensuring real-time responses.
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