varnish-vcl Questions
4
I am hoping someone can advise on the proper method for getting Varnish to send cache-control headers. Currently, my configuration is sending "Cache-Control: no-cache" to clients.
Thanks in advan...
Dna asked 25/1, 2012 at 20:43
2
I'd like to be able to change the backend on a retry in Varnish 4. We've got this working on a different (older) application using Varnish 3, but I haven't been able to figure it out for v4, nor fi...
Freightage asked 18/2, 2016 at 0:11
2
I'm trying to use varnish to cache rpms and other giant binaries. What I would've expected is that when an object is expired in the cache varnish would send a request with If-Not-Modified to the ba...
Butyraceous asked 26/8, 2017 at 18:56
1
I am Getting a lot of varnish 503 error un uncached pages , all these error have one thing in common , checking varnish logs it stats "FetchError overflow".
Also error is not consistent , sometimes...
Retiring asked 30/11, 2017 at 11:8
4
I have this error in my site
Error 503 Backend fetch failed
Backend fetch failed
Guru Meditation:
XID: 526707
Varnish cache server
Anyone know what may be the cause or how to find...
Vip asked 6/5, 2015 at 6:3
1
I'm running a stand alone instance of varnish on a Digital Ocean Ubuntu VM which basically works fine. The setup is used to take load of an older wordpress server that sits anyhwere else. That work...
Crin asked 4/9, 2015 at 6:55
5
Solved
I have 2 environments variables :
echo $FRONT1_PORT_8080_TCP_ADDR # 172.17.1.80
echo $FRONT2_PORT_8081_TCP_ADDR # 172.17.1.77
I want to inject them in a my default.vcl like :
backend front1 {
...
Nickelsen asked 10/1, 2014 at 23:35
2
I manage a site that has a single cookie, which we have to use, but will always be one of 9 values (including no value). I'd like to use varnish in front of our application servers, with varnish se...
Konyn asked 27/9, 2013 at 19:29
1
So Ive got a bit of a weird one. I have a debian 9 machine running with Nginx, Varnish, php-fpm and wordpress/woocommerce. The site essentially works, but Im having some weird issues with adding to...
Titanium asked 22/6, 2018 at 6:20
4
Solved
I'm looking for a way to clear the cache for all domains and all URLs in Varnish.
Currently, I would need to issue individual commands for each URLs, for example:
curl -X PURGE http://example.com...
Gurkha asked 11/8, 2016 at 9:10
2
Solved
I have installed varnish and fallowed the exact instruction for setting it up, however, it is not working as expected.
My /etc/default/varnish setup is:
DAEMON_OPTS="-a :80 \
-T localhost:1234 \...
Tamberg asked 3/6, 2015 at 9:55
2
Solved
I know that in Varnish you can add data to the cache hash using hash_data() within vcl_hash, as per the docs.
For debugging purposes, I would like to be able to see the entire contents of whatever...
Arundell asked 15/7, 2015 at 16:59
2
We're caching for a problematic IIS server that sometimes just sends empty responses (0 bytes) instead of proper ones. Caching these responses would be a disaster, and we have no way of fixing the ...
Starks asked 8/3, 2016 at 13:12
7
Solved
My goal is to "whitelist" certain querystring attributes and their values so varnish will not vary cache between the urls.
Example:
Url 1: http://foo.com/someproduct.html?utm_code=google&typ...
Bearwood asked 30/10, 2012 at 17:6
1
Solved
Can someone explain the following vcl code:
sub vcl_hash {
hash_data(req.url);
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
if (req.http.Cookie) {
hash_...
Fagaly asked 12/1, 2017 at 4:6
1
Solved
Hi i'm a newbie in Varnish HTTP-Cache. I find it hard to understand the difference in concept between purging and banning cache invalidation.
Anyone who can explain and differentiate banning and p...
Euphemize asked 5/1, 2017 at 8:53
3
Solved
My request flow is as follows;
HAProxy --> Varnish (4.0.1) --> Apache web backends
When a new request comes in to HAProxy, the client's IP address is being added to the X-Forwarded-For hea...
Those asked 28/8, 2014 at 22:4
1
Solved
I was really surprised that I've had this much trouble finding this answer anywhere, but I can't.
With the built-in VCL in vcl_recv, etc., in Varnish 4.0+, does Varnish cache 404 responses by defa...
Guaco asked 25/8, 2016 at 14:28
4
Solved
I'm using Drupal 7 latest dev version.
I have installed Varnish and Expire modules and setup them. They are working very well but I have one problem regarding deleting cache from varnish.
The pr...
Philippine asked 24/11, 2012 at 20:1
2
Solved
I have a fresh install of Slackware 64 14bit, and looking through Varnish installation documentation I have all the dependencies installed and compiled varnish with no error (make check passes all ...
Brahmi asked 25/4, 2014 at 5:24
1
Solved
Using Varnish 3.0.7. In order to forward any non-SSL connections I've added the following subroutine to my VCL:
sub vcl_synth {
if (resp.status == 750) {
set resp.status = 301;
set resp.http.Lo...
Rox asked 30/12, 2015 at 12:15
1
Solved
Well, I'll keep it simple, PURGE requests (or so I thought?) were pretty much all handled by literally:
acl purge {
"localhost";
"127.0.0.1";
}
and then
if (req.method == "PURGE") {
if (!...
Grandam asked 17/2, 2015 at 5:26
2
Solved
How can I print a log in VCL?
Can I print log info on screen?
Can I do like this?
sub vcl_recv {
....
log.info(req.http.host); // can i write a log here?
....
}
Oversoul asked 25/9, 2012 at 4:32
2
Solved
This would be a perfect solution for me as I need to serve some generated content to web browsers.
My plan is to generate the content on demand and store it for next time. I don't want the browsers...
Mickey asked 1/12, 2010 at 18:45
1
Solved
My configs are based on Varnish 3.0 and I have been updating them. But I ran into a snag.
vcl_fetch was replace to vcl_backend_response. Inside of vcl_fetch you used to be able to use req.url but ...
Subtraction asked 28/11, 2014 at 21:9
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