FA-98559 / KV cache position mapping / Member archive
Paged cache position selects the correct block · case 04
A logical position at a page boundary is assigned to the preceding block.
Case contract
For nonnegative position and positive page_size, return (block_number, offset_within_block).
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 |
|---|---|---|---|
| last offset | [2, 3] | [1, 3] | Failed |
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