Varnish'in Dahili VCL'i

default.vcl

vcl 4.0;

#######################################################################
# Client side

sub vcl_recv {
    if (req.method == "PRI") {
	/* We do not support SPDY or HTTP/2.0 */
	return (synth(405));
    }
    if (req.method != "GET" &&
      req.method != "HEAD" &&
      req.method != "PUT" &&
      req.method != "POST" &&
      req.method != "TRACE" &&
      req.method != "OPTIONS" &&
      req.method != "DELETE" &&
      req.method != "PATCH") {
        /* Non-RFC2616 or CONNECT which is weird. */
        return (pipe);
    }

    if (req.method != "GET" && req.method != "HEAD") {
        /* We only deal with GET and HEAD by default */
        return (pass);
    }
    if (req.http.Authorization || req.http.Cookie) {
        /* Not cacheable by default */
        return (pass);
    }
    return (hash);
}

sub vcl_pipe {
    # By default Connection: close is set on all piped requests, to stop
    # connection reuse from sending future requests directly to the
    # (potentially) wrong backend. If you do want this to happen, you can undo
    # it here.
    # unset bereq.http.connection;
    return (pipe);
}

sub vcl_pass {
    return (fetch);
}

sub vcl_hash {
    hash_data(req.url);
    if (req.http.host) {
        hash_data(req.http.host);
    } else {
        hash_data(server.ip);
    }
    return (lookup);
}

sub vcl_purge {
    return (synth(200, "Purged"));
}

sub vcl_hit {
    if (obj.ttl >= 0s) {
        // A pure unadultered hit, deliver it
        return (deliver);
    }
    if (obj.ttl + obj.grace > 0s) {
        // Object is in grace, deliver it
        // Automatically triggers a background fetch
        return (deliver);
    }
    // fetch & deliver once we get the result
    return (miss);
}

sub vcl_miss {
    return (fetch);
}

sub vcl_deliver {
    return (deliver);
}

/*
 * We can come here "invisibly" with the following errors: 500 & 503
 */
sub vcl_synth {
    set resp.http.Content-Type = "text/html; charset=utf-8";
    set resp.http.Retry-After = "5";
    set resp.body = {"<!DOCTYPE html>
<html>
  <head>
    <title>"} + resp.status + " " + resp.reason + {"</title>
  </head>
  <body>
    <h1>Error "} + resp.status + " " + resp.reason + {"</h1>
    <p>"} + resp.reason + {"</p>
    <h3>Guru Meditation:</h3>
    <p>XID: "} + req.xid + {"</p>
    <hr>
    <p>Varnish cache server</p>
  </body>
</html>
"};
    return (deliver);
}

#######################################################################
# Backend Fetch

sub vcl_backend_fetch {
    if (bereq.method == "GET") {
        unset bereq.body;
    }
    return (fetch);
}

sub vcl_backend_response {
    if (bereq.uncacheable) {
        return (deliver);
    } else if (beresp.ttl <= 0s ||
      beresp.http.Set-Cookie ||
      beresp.http.Surrogate-control ~ "no-store" ||
      (!beresp.http.Surrogate-Control &&
        beresp.http.Cache-Control ~ "no-cache|no-store|private") ||
      beresp.http.Vary == "*") {
        # Mark as "Hit-For-Pass" for the next 2 minutes
        set beresp.ttl = 120s;
        set beresp.uncacheable = true;
    }
    return (deliver);
}

sub vcl_backend_error {
    set beresp.http.Content-Type = "text/html; charset=utf-8";
    set beresp.http.Retry-After = "5";
    set beresp.body = {"<!DOCTYPE html>
<html>
  <head>
    <title>"} + beresp.status + " " + beresp.reason + {"</title>
  </head>
  <body>
    <h1>Error "} + beresp.status + " " + beresp.reason + {"</h1>
    <p>"} + beresp.reason + {"</p>
    <h3>Guru Meditation:</h3>
    <p>XID: "} + bereq.xid + {"</p>
    <hr>
    <p>Varnish cache server</p>
  </body>
</html>
"};
    return (deliver);
}

#######################################################################
# Housekeeping

sub vcl_init {
}

sub vcl_fini {
    return (ok);
}

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vcl 4.0; ####################################################################### # Client side sub vcl_recv { if (req.method == "PRI") { /* We do not support SPDY or HTTP/2.0 */ return (synth(405)); } if (req.method != "GET" && req.method != "HEAD" && req.method != "PUT" && req.method != "POST" && req.method != "TRACE" && req.method != "OPTIONS" && req.method != "DELETE" && req.method != "PATCH") { /* Non-RFC2616 or CONNECT which is weird. */ return (pipe); } if (req.method != "GET" && req.method != "HEAD") { /* We only deal with GET and HEAD by default */ return (pass); } if (req.http.Authorization || req.http.Cookie) { /* Not cacheable by default */ return (pass); } return (hash); } sub vcl_pipe { # By default Connection: close is set on all piped requests, to stop # connection reuse from sending future requests directly to the # (potentially) wrong backend. If you do want this to happen, you can undo # it here. # unset bereq.http.connection; return (pipe); } sub vcl_pass { return (fetch); } sub vcl_hash { hash_data(req.url); if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); } return (lookup); } sub vcl_purge { return (synth(200, "Purged")); } sub vcl_hit { if (obj.ttl >= 0s) { // A pure unadultered hit, deliver it return (deliver); } if (obj.ttl + obj.grace > 0s) { // Object is in grace, deliver it // Automatically triggers a background fetch return (deliver); } // fetch & deliver once we get the result return (miss); } sub vcl_miss { return (fetch); } sub vcl_deliver { return (deliver); } /* * We can come here "invisibly" with the following errors: 500 & 503 */ sub vcl_synth { set resp.http.Content-Type = "text/html; charset=utf-8"; set resp.http.Retry-After = "5"; set resp.body = {"<!DOCTYPE html> <html> <head> <title>"} + resp.status + " " + resp.reason + {"</title> </head> <body> <h1>Error "} + resp.status + " " + resp.reason + {"</h1> <p>"} + resp.reason + {"</p> <h3>Guru Meditation:</h3> <p>XID: "} + req.xid + {"</p> <hr> <p>Varnish cache server</p> </body> </html> "}; return (deliver); } ####################################################################### # Backend Fetch sub vcl_backend_fetch { if (bereq.method == "GET") { unset bereq.body; } return (fetch); } sub vcl_backend_response { if (bereq.uncacheable) { return (deliver); } else if (beresp.ttl <= 0s || beresp.http.Set-Cookie || beresp.http.Surrogate-control ~ "no-store" || (!beresp.http.Surrogate-Control && beresp.http.Cache-Control ~ "no-cache|no-store|private") || beresp.http.Vary == "*") { # Mark as "Hit-For-Pass" for the next 2 minutes set beresp.ttl = 120s; set beresp.uncacheable = true; } return (deliver); } sub vcl_backend_error { set beresp.http.Content-Type = "text/html; charset=utf-8"; set beresp.http.Retry-After = "5"; set beresp.body = {"<!DOCTYPE html> <html> <head> <title>"} + beresp.status + " " + beresp.reason + {"</title> </head> <body> <h1>Error "} + beresp.status + " " + beresp.reason + {"</h1> <p>"} + beresp.reason + {"</p> <h3>Guru Meditation:</h3> <p>XID: "} + bereq.xid + {"</p> <hr> <p>Varnish cache server</p> </body> </html> "}; return (deliver); } ####################################################################### # Housekeeping sub vcl_init { } sub vcl_fini { return (ok); }