Adam W. Dace created TS-3750:
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Summary: HostDB: Setting DNS TTL to "ignore" still creates many
DNS lookups
Key: TS-3750
URL: https://issues.apache.org/jira/browse/TS-3750
Project: Traffic Server
Issue Type: Bug
Components: DNS, HostDB
Reporter: Adam W. Dace
In an effort to further speed my forward-only proxy cache, I've been
experimenting with using a 1-4 hour internal TTL in HostDB(as opposed to the
default). Many websites set their DNS TTL extremely low(i.e. 60 seconds), and
I'd like to bypass that behavior.
Unfortunately, according to OpenDNS my proxy is still generating roughly 1 DNS
lookup per HTTP request. I don't know why.
I've taken a look at the codebase, but frankly it's all state machines in there
and I don't possess the skills to identify and fix this problem. I have turned
on debugging and can say there does appear to be a lot of DNS activity going on.
If someone could take a look, I'd greatly appreciate it. I'll be happy to help
test, also. Thanks!
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