FA-98552 / KV cache position mapping / Member archive

Ring slots are read in logical order · case 02

Physical slot order is returned as if it were chronological order.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Given slot values, oldest_slot, and count, return values for count consecutive occupied slots starting at oldest_slot with wraparound. count is between zero and capacity.

Why this case matters

A small in-memory model makes the cache address contract explicit for a serving component.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
wrapped sequence	`["a", "b", "c"]`	`["d", "a", "b"]`	Failed

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