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In the video, I discussed how Grab manages millions of food and Mart orders daily, focusing on the critical database infrastructure. I explored the highlevel architecture of Grab's order platform, emphasizing high availability, stability, and performance at scale. Additionally, I introduced a system design course with a practical approach for engineers to learn realworld system building. The key points covered Grab's design goals of stability, costeffectiveness, and consistency, along with the architecture of transactional and analytical databases using DynamoDB and MySQL.

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