I have noticed what seems to be a bug in varnish. If anyone has
experience with using ESI and timing things out from the cache manually
at the same time, please take a look at this and, if it is not a bug,
take a moment to explain what I am missing.
I have ESI setup in varnish. I have a file 'a.ehtml' that includes
'b.html' via an ESI include. I have my hit function setup to do 'set
obj.ttl=0s' when a 'no-cache' request is sent in.
If I make a request to b.html to reset it via 'no-cache' ( shift-refresh
from my browser ), 'a.ehtml' still continues to be cached for the
original ttl of 'b.html' before I set it to 0.
That is:
1. b.html contains '1'
2. a.ehtml shows '1' in the browser ( it includes b )
3. change the contents of b.html to '2'
4. shift-refresh b.html to force it to update in the cache
5. b.html now shows '2' in a browser
6. a.ehtml continues to show '1' ( until time length of original timeout
of b.html passes )
The relevant portion of vcl_hit:
if( req.http.Cache-Control == "no-cache" ) {
if (! (req.http.User-Agent ~ "bot|MSIE") ) {
set obj.ttl = 0s; return(restart);
}
}
The revelant portion of vcl_fetch:
if( req.url ~ "\.ehtml$" || beresp.http.Content-Type == "text/ehtml" ) {
set beresp.http.Content-Type = "text/html";
esi;
}
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