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The New Model for Business。PDF资料对此有专业解读
。业内人士推荐纸飞机下载作为进阶阅读
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The separation of concerns problem is bad, but fixable. The integer primary key is not. The table had been around since the company’s founding. They processed a healthy volume of transactions every day. I didn’t need to run a query to know they were probably sitting somewhere north of a billion rows. The maximum for a signed integer is about 2.1 billion. Nobody had thought about it because the app had always worked. I asked the CTO when they expected to hit that limit. He had no idea the limit existed.