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Fix subtractive overflow #314

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Fix subtractive overflow #314

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5 changes: 4 additions & 1 deletion shard.go
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Original file line number Diff line number Diff line change
Expand Up @@ -269,7 +269,10 @@ func (s *cacheShard) del(hashedKey uint64) error {

func (s *cacheShard) onEvict(oldestEntry []byte, currentTimestamp uint64, evict func(reason RemoveReason) error) bool {
oldestTimestamp := readTimestampFromEntry(oldestEntry)
if currentTimestamp-oldestTimestamp > s.lifeWindow {
keyHash := readHashFromEntry(oldestEntry)
if keyHash == 0 || (currentTimestamp >= oldestTimestamp &&
currentTimestamp-oldestTimestamp > s.lifeWindow) {

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@janisz janisz Apr 21, 2022

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Could you add a test for it?

evict(Expired)
return true
}
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