We replaced Redis with MySQL for inventory reservations—and it scaled

Shopify Engineering2026-05-13 00:510 views

How we used SKIP LOCKED, composite primary keys, and connection visibility to hit our scale targets.

An invoice for $1,000 is open on September 30. On October 1 the customer pays $400. Run the September report again and t

Introduction Every application we use—from online shopping platforms and banking apps to social media websites—depends o

You save 200 interesting links. You open maybe four. The rest rot in a folder called "Later" . Like most developers, I h

The uninstall button warns you about dependent apps and nothing else. So I took a demo database, wrote down what I expec

Most retrieval-augmented generation (RAG) tutorials end at the same point: load some documents, split them into chunks,

Try to open a DuckDB file from two processes at once and you get this: _duckdb.IOException: IO Error: Could not set lock

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