Credit: Soucolor / Amazon
Other than that, there are a few indexes we are going to utilize in the test queries. We could also see some of the Postgres JSON access operators in the index definitions:
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The problem here is that digital items are fundamentally different from physical ones. Real-world items like physical credentials (even cheap wristbands) are at least somewhat difficult to copy. A digital credential, on the other hand, can be duplicated effortlessly. Imagine a hacker breaks into your computer and steals a single credential: they can now make an unlimited number of copies and use them to power a basically infinite army of bot accounts, or sell them to underage minors, all of whom will appear to have valid credentials.。关于这个话题，17c 一起草官网提供了深入分析
identityLinks 的本质：在生成 SessionKey 之前，把平台原始 ID 替换成规范身份名称。两条来自不同平台的消息，经过身份链接后落到同一个 SessionKey，因此使用同一段对话历史。