event-sourcing

TigerBeetle's Stablecoin Mistake

Is there such a thing as "the ultimate fintech database"?

Jan 21 • Alvaro Duran

From Stock Markets To Ledgers, Part VI: Mechanical Sympathy

3 books to satiate your curiosity and ambition

Dec 10, 2025 • Alvaro Duran

From Stock Markets To Ledgers, Part IV: Queues

AMQP failed, but companies building ledgers pretend that it didn't

Nov 26, 2025 • Alvaro Duran

From Stock Markets To Ledgers, Part I: Fairness

Why fairness, not speed, is the ultimate validation of stock markets

Oct 29, 2025 • Alvaro Duran

CQRS Is Just Balances And Records

Ledgers are hard because you're forced to separate reads from writes

Sep 24, 2025 • Alvaro Duran

Testable Payment Webhooks

PSPs are prioritizing their engineers' experience above anyone else's

Aug 6, 2025 • Alvaro Duran

NoDB: Processing Payments Without a Database

Making payments simpler and more reliable by removing databases out of the way.

Dec 18, 2024 • Alvaro Duran

How Modern Treasury Invented Event Locking

Race conditions are the nastiest problem in money software. They've forced engineers to make wrong design choices. Not anymore.

Nov 20, 2024 • Alvaro Duran

Engineers Do Not Get To Make Startup Mistakes When They Build Ledgers

Practical accounting for fintech engineers, and also how not to repeat my silly mistakes.

Sep 11, 2024 • Alvaro Duran

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