FA-98607 / KV cache position mapping / Member archive
Rewriting a logical position replaces its prior slot · case 02
A retry creates two slot entries for the same logical position.
Case contract
Entries are ordered (logical_position, slot). Apply one update; replace that position in place or append if absent.
Why this case matters
A small in-memory model makes the cache address contract explicit for a serving component.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| replace middle | [[1, 4], [2, 5], [3, 6], [2, 9]] | [[1, 4], [2, 9], [3, 6]] | Failed |
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