Unverified50% confidenceTradeoffExact time
过短的TTL会增加权威DNS服务器负载，过长则可能导致已售域名仍被显示为待售状态，需在查询效率和信息时效性之间取得平衡
1
Sources
50%
Confidence
Long-term
Relevance
8/12/2026
First Seen
Sources
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