Re: [squid-users] Youtube -An error occured, please try again later

From: Amos Jeffries <>
Date: Mon, 31 May 2010 20:32:43 +1200

GIGO . wrote:
> Hi henrik,
> Right now i don't have my access.log. (will share it with you after the weekend) However let me tell you that after setting the negative_ttl to 0. Apparently the problem was resolved. But i need to be sure about it.
> Do you think that this had resolved the problem?

Quite probably.

negative_ttl forces Squid to cache and provide ALL clients with the 4xx
or 5xx error page for a certain length of time. Even if it was only a
temporary issue due to a single client request failure. It's a manually
added DoS vulnerability to every Squid which uses it.

It's rarely useful nowdays even for its original purpose of reducing 404
flooding of backend servers.


Please be using
   Current Stable Squid 2.7.STABLE9 or 3.1.3
Received on Mon May 31 2010 - 08:32:51 MDT

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