testing

.dockerignore

@@ -0,0 +1,4 @@
+.git
+test-nginx
+Makefile
+test.rb

.gitignore

@@ -0,0 +1 @@
+.DS_Store

Dockerfile

@@ -11,5 +11,4 @@ RUN apt-get update \
 
 COPY varnish.vcl /etc/varnish.vcl
 
-CMD ["varnishd","-f","/etc/varnish.vcl"]
-
+CMD ["varnishd", "-F", "-f", "/etc/varnish.vcl"]

Makefile

@@ -0,0 +1,16 @@
+test:
+	ruby test.rb
+
+
+test-up:
+	cd test-nginx && docker build -t docker-varnish-test-nginx . && docker run -d --name docker-varnish-test-nginx docker-varnish-test-nginx
+	docker build -t docker-varnish-test . && docker run -d --name docker-varnish-test --link docker-varnish-test-nginx:backend -p 8080:80 docker-varnish-test
+
+test-destroy:
+	docker kill docker-varnish-test docker-varnish-test-nginx || true
+	docker rm docker-varnish-test docker-varnish-test-nginx || true
+	docker rmi docker-varnish-test docker-varnish-test-nginx || true
+
+clean: test-destroy
+
+.PHONY: test test-up test-destroy

test-nginx/Dockerfile

@@ -0,0 +1,2 @@
+FROM nginx
+COPY nginx.conf /etc/nginx/nginx.conf

test-nginx/nginx.conf

@@ -0,0 +1,46 @@
+user nginx;
+worker_processes auto;
+
+error_log /dev/stdout info;
+
+events {
+    worker_connections 1024;
+    multi_accept on;
+    use epoll;
+}
+
+http {
+  include /etc/nginx/mime.types;
+  default_type application/octet-stream;
+
+  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                    '$status $body_bytes_sent "$http_referer" '
+                    '"$http_user_agent" "$http_x_forwarded_for"';
+
+  server_tokens off;
+  access_log off;
+
+  sendfile on;
+  tcp_nopush on;
+  tcp_nodelay on;
+  chunked_transfer_encoding on;
+
+  keepalive_timeout 30;
+
+  client_max_body_size 2m;
+
+  server {
+    listen 80 default_server;
+    server_name _;
+
+    location /cache/1s {
+      add_header "cache-control" "max-age=1";
+      return 200 'ok';
+    }
+
+    location /cache/forever {
+      add_header "cache-control" "max-age=31536000";
+      return 200 'ok';
+    }
+  }
+}

test.rb

@@ -0,0 +1,44 @@
+
+
+require 'open-uri'
+
+
+base = "http://#{`boot2docker ip`.chomp}:8080"
+
+
+
+
+
+# Test 1 second TTL.
+
+open("#{base}/cache/1s") do |f|
+  raise "wrong max-age header \"#{f.meta['cache-control']}\"" if f.meta['cache-control'] != 'max-age=1'
+  xvarnish = f.meta['x-varnish'].split(' ')
+  raise 'varnish cache miss on cached content' if xvarnish.length != 1
+end
+
+sleep(1)
+
+open("#{base}/cache/1s") do |f|
+  raise "wrong max-age header \"#{f.meta['cache-control']}\"" if f.meta['cache-control'] != 'max-age=1'
+  xvarnish = f.meta['x-varnish'].split(' ')
+  raise 'varnish cache hit on content that should have expired' if xvarnish.length != 2 
+end
+
+
+# Test max TTL.
+
+open("#{base}/cache/forever") do |f|
+  raise "wrong max-age header \"#{f.meta['cache-control']}\"" if f.meta['cache-control'] != 'max-age=1'
+  xvarnish = f.meta['x-varnish'].split(' ')
+  raise 'varnish cache miss on cached content' if xvarnish.length != 1
+end
+
+sleep(1)
+
+open("#{base}/cache/forever") do |f|
+  raise "wrong max-age header \"#{f.meta['cache-control']}\"" if f.meta['cache-control'] != 'max-age=1'
+  xvarnish = f.meta['x-varnish'].split(' ')
+  raise 'varnish cache hit on content that should have expired' if xvarnish.length != 2 
+end
+

varnish.vcl

@@ -45,30 +45,34 @@ 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") {
-        /* 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);
+  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") {
+      /* 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 {
@@ -148,23 +152,32 @@ sub vcl_synth {
 # Backend Fetch
 
 sub vcl_backend_fetch {
-    return (fetch);
+  return (fetch);
 }
 
+# CUSTOM
 sub vcl_backend_response {
-    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);
+
+  # Handle TTLs that are two high.
+  if (beresp.ttl > 1s) {
+    set beresp.ttl = 1s;
+    set beresp.http.cache-control = "max-age=1";
+  }
+
+  # Handle uncacheable responses.
+  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 {
@@ -200,15 +213,7 @@ sub vcl_fini {
 }
 
 backend ap1 {
-  .host = "127.0.0.1";
-  .port = "8080";
+  .host = "backend";
+  .port = "80";
   .first_byte_timeout = 200s;
-  .probe = {
-         .url = "/";
-         .interval = 5s;
-         .timeout = 1 s;
-         .window = 5;
-         .threshold = 3;
-         .initial = 1;
-  }
 }