In the rapidly evolving landscape of financial fraud, traditional fraud detection systems struggle to keep pace with sophisticated techniques employed by fraudsters. The global cost of fraud is projected to reach up to $1.5 trillion annually by 2025, necessitating advanced solutions that can operate in real time. CockroachDB, a distributed SQL database, offers a new approach with its advanced vector indexing capabilities, enabling low-latency anomaly detection and real-time alerting. By employing a multi-layered fraud detection system that includes rule-based, anomaly detection, and predictive modeling layers, organizations can minimize false positives and improve detection accuracy. CockroachDB's distributed architecture facilitates quick access to historical data, supporting efficient vector searches and enhancing the overall performance of fraud detection systems. These capabilities, combined with AWS AI services, create a robust and scalable pipeline for real-time fraud detection, maintaining security without compromising user experience.