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Nobody Got Fired for Uber's $8 Million Ledger Mistake?
LedgerStore became a case study for DynamoDB, and system design publications keep praising it to this day. But the design was abandoned 3 years after it…
Apr 15
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Alvaro Duran
3
3
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The Luxury Playbook for Online Businesses
Introducing a different kind of playbook for a different kind of startup
Apr 1
•
Alvaro Duran
1
You Don't Know What a Ledger Is For
You think you do, but you don't
Mar 18
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Alvaro Duran
4
Modern Treasury's Stablecoin Sandwich
After acquiring Beam, Modern Treasury wants to become the developer-first API for moving money in any form.
Feb 19
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Alvaro Duran
2
Stablecoins for Skeptics
The last crazy idea from cryptoland may be crazy enough to work
Feb 11
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Alvaro Duran
TigerBeetle's Stablecoin Mistake
Is there such a thing as "the ultimate fintech database"?
Jan 21
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Alvaro Duran
2
The Playbook's 2025 Year In Review
The most popular and most important articles on The Payments Engineer Playbook in 2025.
Dec 17, 2025
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Alvaro Duran
2
Raft Consensus in 2,000 words
Understanding the Understandable Consensus Protocol
Nov 12, 2025
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Alvaro Duran
2
From Stock Markets To Ledgers, Part I: Fairness
Why fairness, not speed, is the ultimate validation of stock markets
Oct 29, 2025
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Alvaro Duran
1
1
Why AI Commerce Isn't Going Anywhere
Human Not Present payments are technically possible, but socially unacceptable
Oct 15, 2025
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Alvaro Duran
3
How To Review Code That Deals With Money
You're probably focusing on the wrong things. It doesn't look as good as you think.
Sep 17, 2025
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Alvaro Duran
4
Richard Pryor Stole a lot of Half Cents and Bought a Ferrari
Why Floats and Decimals as Money Make Illegal States Representable
Aug 27, 2025
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Alvaro Duran
4
2
2
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