Unverified50% confidenceTradeoffExact time
DNS TTL is typically set to 300–86400 seconds; a longer TTL reduces upstream query pressure but slows the propagation of changes.
1
Sources
50%
Confidence
Long-term
Relevance
8/17/2026
First Seen
Sources
Related Claims
Unverified每条DNS记录都附带TTL值，指定递归解析器可缓存该记录的秒数，常见设置从300秒到86400秒不等79% similarUnverifiedA typical DNS TXT record query consumes only approximately 100–500 bytes of network traffic, with response latency typically between 10–100 milliseconds.74% similarVerifiedThe TTL (Time To Live) value determines how long DNS resolution results survive in the cache and directly affects the speed at which DNS changes take effect.74% similarUnverified在高并发场景下，一个平均延迟180ms的TTS服务大约每8次响应就有1次飙到400ms以上69% similar
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