hostip: do DNS cache pruning in milliseconds#18160
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Instead of using integer seconds. Also: if the cache contains over 30,000 entries after first pruning, it makes anoter round and removes all entries that are older than half the age of the oldest entry until it goes below 30,000.
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Instead of using integer seconds. Also: if the cache contains over 30,000 entries after first pruning, it makes another round and removes all entries that are older than half the age of the oldest entry until it goes below 30,000.