How Stripe Handles $1 Trillion in Payments with Advanced Database Architecture

In 2023, engineers at Stripe processed $1 trillion in total payment volume, all while maintaining an uptime of 99.9% We dug into Stripe's documentation, and it seems like they have a customized MongoDB database known as Stripe's DocDB which can handle massive volumes of real-time data at scale. Product applications at Stripe access data in their database through a fleet of database proxy servers, which they developed in-house to enforce concerns of reliability, scalability, admission control, and access control. As a mechanism to horizontally scale, they made the key architectural decision t…