FoundationDB And The Case For Extreme Ledgers

The Payments Engineer PlaybookPaywalled.
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XTDB, Time traveling, and the ‘As Of’ Ledgers

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Google’s Spanner Lets You Top Up on Earth and Pay for Groceries on Mars

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Multi-currency ledgers for single-currency businesses

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Why Optimistic Locking in Ledgers Isn’t Always a Good Idea

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Assume that Manual Work in a Ledger Is Impossible

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The Playbook's 2026 Beach Reads

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Forget Agents: Here's What's Great About x402

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Why You Can Have Too Much Idempotency In Ledgers

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Losing The Fear of SQL

The Payments Engineer PlaybookPaywalled.
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A Ledger is 3 Products in 1

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Don't Be Careful, Be Competent

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The Missing State In Your State Machine

The Payments Engineer PlaybookPaywalled.
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How to Recover The Flexibility of Paper In Ledgers

The Payments Engineer PlaybookPaywalled.
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In An Agentic Commerce World, Fraud Will Be Indistinguishable From Legit

The Payments Engineer PlaybookPaywalled.
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Virtual Bank Accounts Are Virtually Inexhaustible

The Payments Engineer Playbook8 min read
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No Such Thing As A Currency Of Reference

The Payments Engineer PlaybookPaywalled.
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Source-Destination Pairs Need Imaginary Accounts to Work

The Payments Engineer PlaybookPaywalled.
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Why Database-Layer Double-Entry Is a Bet, Not a Guarantee

The Payments Engineer PlaybookPaywalled.
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The Only Accounting You Need to Know to Build a Ledger

The Payments Engineer PlaybookPaywalled.
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