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Blazing Fast Fraud Detection with Kafka (<500ms, No Kidding)

Ahad-23 on April 13, 2025

💡 The Motivation Let’s be real. Nobody likes waiting in queues, especially not the ones where money’s on the line and fraudsters are ...
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Nevo David

Amazing work creating this efficient pipeline with clear implementation details! What inspired the choice of tools and techniques used here?

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Ahad-23

Hey Nevo, I'm glad you liked my implementation!

The choice of tools was shaped by both hands-on experience and practical constraints. I used kNN instead of Random forest based on a comparative study of model performance for this particular dataset which I found on kaggle, although random forest stands out for problem statements regarding fraud and anomaly detection.

For the pipeline I specifically used kafka because of the theoretical familiarity I had about it; high throughput. Kafka's streaming capabilities addresses real world credit card transactions scenarios where thousands of transactions occur each second at varying time differences. Although after a thorough literature review of multiple research papers, Apache Flink stood out but I had already started my implementation and my faculty guide also supported me using Kafka for because of it's wider adoption in the industry.

I chose Docker mainly for consistency and ease of deployment. For a project like this that mimics production behavior, using containers felt closer to how things would run in the real world.

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Vedangi Thokal

Great blog

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Ahad-23

Thank you Vedangi!

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Arya bhatt

Love the little jokes if need help hit me up! And nice project for seminar

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Ahad-23

Thank you Arya!

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Shivani Bobdey

Great work Ahad!

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vishveshmodcoicar

sensational

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rachit patekar

Loved how you combined technical depth with humour!! Great Project!

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Ahad-23

Thank you Rachit!

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vishveshmodcoicar

honestly, an amazing blog, one of the best reads in a long time.
great work Ahad!

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Ahad-23

Thank you Vishvesh!