Company

Stripe

Every Stripe engineering case study on TechLogStack — real production incidents, post-mortems, and fixes.

Stripe Databases

16 min

How Stripe Moves Petabytes Between Database Shards Without Stopping the Money

Stripe processed over $1 trillion in payment volume in 2023 while maintaining 99.999% uptime — five nines, fewer than 6 minutes of downtime all year. The infrastructure secret is a database platform called DocDB and a migration engine that moves petabytes of financial data between shards without any application knowing it happened.

99.999% uptime achieved 5M database queries/sec 1.5 PB migrated in 2023

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Stripe Performance

15 min

Stripe Converted 3.7 Million Lines of JavaScript in One Pull Request on a Sunday

On Sunday, March 6, 2022, Stripe merged a single pull request that converted their entire largest JavaScript codebase from Flow to TypeScript. 3.7 million lines of code. Hundreds of engineers arrived Monday morning to start writing TypeScript. The migration had been invisible until it wasn't.

3.7M lines converted in 1 PR

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