Quick summary
- Term
- TTL
- Plain-English definition
- TTL, or time to live, tells DNS resolvers how long they may cache a DNS answer.
- Technical definition
- TTL, or time to live, tells DNS resolvers how long they may cache a DNS answer.
- Commonly confused with
- time to live
- Related terms
- Cache, DNS Propagation, Resolver
Definition
TTL, or time to live, tells DNS resolvers how long they may cache a DNS answer.
Why it matters
Lower TTLs can make planned DNS changes take effect sooner, while higher TTLs can reduce lookup load.
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