Omar al Zabir published this handy article that describes how to "clean up" this anonymous user data periodically to avoid storing it forever in your database.

Omar Al Zabir发表了一个很有用的文章，描述如何周期性地清除匿名用户数据以免占据你的数据库。

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This allows for consumer specific applications where combining published content with related user data on a convenient, single volume is desirable.

ENGADGET: Blu-ray Discs expand to 128GB under new BDXL spec

The Intra-Hybrid Blu-ray Disc (IH-BD) incorporates a single BD-ROM layer and a single BD-RE layer so as to enable the user to view, but not overwrite, critical published data while providing the flexibility to include relevant personal data on the same physical disc.

ENGADGET: Blu-ray Discs expand to 128GB under new BDXL spec