Sample varnish.vcl

gistfile1.pl

acl purge {
  "localhost";
  "127.0.0.1";
}

#backend default {
#  .host = "127.0.0.1";
#  .port = "8080";
#}

backend blogs {
  .host = "blogs.n1zyy.com";
  .port = "8080";
}

backend aml {
  .host = "www.amherstmusiclessons.com";
  .port = "8080";
}

sub vcl_recv {
  # Clear Google Analytics cookies
  if (req.http.Cookie) {
    set req.http.Cookie = regsuball(req.http.Cookie, "(^|; ) *__utm.=[^;]+;? *", "\1");
    if (req.http.Cookie == "") {
      remove req.http.Cookie;
    }
  # Honestly, I don't fully understand how virtual hosting works with varnish
  # This might not be necessary
  if (req.http.host ~ "blogs.n1zyy.com") {
    set req.backend = blogs;
  } else if (req.http.host ~ "amherstmusiclessons.com") {
    set req.backend = aml;
  }
  }
  # I think this is standard and not required
  if (req.request != "GET" && req.request != "HEAD") {
    return (pass);
  }
  # Support PURGEing of pages
  if (req.request == "PURGE") {
    if (!client.ip ~ purge) {
      error 405 "Permission denied";
    }
    return (lookup);
  }
}

# Just defined for PURGE support
sub vcl_hit {
  if (req.request == "PURGE") {
    purge_url(req.url);
    error 200 "Purged";
  }
}

# Just here for PURGE support
sub vcl_miss {
  if (req.request == "PURGE") {
    purge_url(req.url);
    error 200 "Purged (miss).";
  }
}

# Insert a header indicating whether it was a hit or miss
sub vcl_deliver {
  if (obj.hits > 0) {
    set resp.http.X-Cache = "Cache hit";
  } else {
    set resp.http.X-Cache = "Cache miss";
  }
}