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.
写在最后自2023年以来，微软、Meta、亚马逊和谷歌为构建“智能网格”投入的资本支出增长了4倍以上。科技巨头们实际上正在经历一次身份的蜕变：从轻资产的软件公司，转变为重资产的公用事业公司。
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