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PostgreSQL Column Limits

If you’ve ever had a deployment fail with “tables can have at most 1600 columns”, you already know this isn’t an academic limit. It shows up at the worst time: during a release, during a migration, or right when a customer escalation is already in flight. But here’s the more common reality: most teams never hit 1,600 columns; they hit the consequences of wide tables first
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The Road to Deploy a Production-Grade, Highly Available System with Open-Source Tools

Everyone wants high availability, and that’s completely understandable. When an app goes down, users get frustrated, business stops, and pressure builds. But here’s the challenge: high availability often feels like a big monster. Many people think, If I need to set up high availability, I must master every tool involved. And there’s another common belief too: Open-source tools are not enough for real HA, so I must buy paid tools.
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PostgreSQL, MongoDB, and what “cannot scale” really means

Last week, I read The Register’s coverage of MongoDB CEO Chirantan “CJ” Desai telling analysts that a “super-high growth AI company … switched from PostgreSQL to MongoDB because PostgreSQL could not just scale.” I believe you can show the value of your own technology without tearing down another. That is really what this post is about.
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