Checklist

• 1. If the issue you raised is not a feature but a question, please raise a discussion at https://github.com/sgl-project/sglang/discussions/new/choose Otherwise, it will be closed.
• 2. Please use English, otherwise it will be closed.

Motivation

In #7216, a customized Lora radix cache is implemented to support lora serving. However, it only includes basic features of radix cache. The following advanced features are still not supported:

• Page Size > 1
• Schedule policies other than fcfs
• Hierarchical cache

This issue serves as a tracker for these advanced supports.

Related resources

In #10317, an extra key is appended to original radix tree key, which can be applied to lora_id. If #10317 is merged, then all the cases mentioned above are automatically supported.

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