How long google chrome and firefox cache DNS records
17,182
I think its a duplication of Firefox invalidate dns cache
There are two configuration values for it in Firefox:
network.dnsCacheExpiration
and network.dnsCacheExpirationGracePeriod
with a default of 60 seconds (v45).
More info: http://kb.mozillazine.org/Network.dnsCacheExpiration
In Chrome: chrome://net-internals/#dns It seems the default is ~1minute (v66).
Don't forget about your system DNS cache. The browser does not talk with the DNS server directly, but rather your system resolver, so TTL is irrelevant here.
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user3448600
Updated on September 14, 2022Comments
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user3448600 over 1 year
For how long Firefox and Chrome cache DNS records in its own(browser) DNS cache ? Do they respect TTL ?