Alexey Rybalchenko 1597999aed fix(shmem): don't cache nullptr in GetRegionFromCache ...

A failed region lookup was inserted into the thread-local cache as
nullptr, making the failure permanent for the lifetime of the cache
generation - retrying never healed because the fast path would return
nullptr without calling GetRegion again. Skip the cache insert on
failure so subsequent calls retry the slow path.

2026-06-10 18:51:04 +02:00

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