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In the video, I discussed the challenges of maintaining data consistency in microservices, focusing on the payment system at Razorpay. Initially, they used a monolithic architecture with MySQL for strong data consistency. However, as traffic grew, they transitioned to microservices to handle the load. They faced issues with database connection limits and decided to split core entities like payments, orders, and ledger into separate microservices. The transition was gradual, involving dual writes to ensure data consistency before fully transitioning traffic.

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