smithcommajoseph · October 27, 2011 21:40
diff --git a/app.vcl b/app.vcl
 #-e This is a basic VCL configuration file for varnish.  See the vcl(7)
 #man page for details on VCL syntax and semantics.
 #
 #Default backend definition.  Set this to point to your content
 #server.
 #
 backend default {
 .host = "127.0.0.1";
 .port = "3000";
 }
      
 sub vcl_recv {   
  #in vcl_revc you can "pass" , "pipe", or "lookup" 
  #never cache non-GET methods      
  if (req.request != "GET") {
   return(pipe); #pass will accomplish same, but apparently more varnish handling
  }   
  # #allow static assets automatically   
  # if (req.url ~ "\.(pdf|png|gif|jpg|swf|css|js)(/$|/\?|\?|$)" ) {
  #   remove req.http.cookie;
  #   remove req.http.authenticate;
  #   remove req.http.Etag;   
  #   remove req.http.If-None-Match;
  #   lookup; #go to backend and see if there is an object        
  # }                                                     
  #     
  #dynamic ruleset for frontend caching, attempt to pull from cache on ALL GET requests.
  if (req.request == "GET") {   
      # disable Etags && incoming cookies
      remove req.http.cookie;
      remove req.http.authenticate;
      remove req.http.Etag;   
      remove req.http.If-None-Match;                        
      return(lookup); #go to backend and see if there is an object 

  # i give up, no caching as default strategy
  } 
  return(pass);    
 }  

 sub vcl_fetch {   
  
  # fetch happens when we pass or try lookup and miss or otherwise go to backend.
  # we can make more assertions on the obj and possibly cache for future use.
  # deliver == cache
  # hit_for_pass == no caching
  
 	# very important, we don't want to cache 500s
 	# we are not letting varnish have a grace period to handle and error or slow backend. 
  if (beresp.status >= 300) {
     return(hit_for_pass);
  }    
   #         
  #respect the backend from Rails private, no caching here
  if ( beresp.http.Cache-Control ~ "private") {
    return(hit_for_pass);
  }

  # #to be pulled from cache, we need the public set         
  if (beresp.http.Cache-Control ~ "public") {
      unset beresp.http.Set-Cookie;
      #unset the cache control, else the browser will keep for that long too. 
      #we want to control requests.
      unset beresp.http.Etag;
      unset beresp.http.Cache-Control; 
      set beresp.http.Cache-Control = "no-cache"; #tell client to request a new one everytime
      set beresp.do_esi = true; #we will attempt to ESI process as well
      return(deliver);
  } 
  #else we will try NOT cache by default , be safe
  return(hit_for_pass);  

 }

 # this executes on every response from varnish
 sub vcl_deliver {
  if (obj.hits > 0) {
          set resp.http.X-Cache = "HIT";
  } else {
          set resp.http.X-Cache = "MISS";
  }
 }

 
 # #This is displayed if there is an error.
 # still have to nail the newer syntax for this...
 # sub vcl_error {
 #    set obj.http.Content-Type = "text/html; charset=utf-8";
 #    synthetic {"
 # <?xml version="1.0" encoding="utf-8"?>
 # <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 # "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 # <html>
 #  <head>
 #    <title>"} obj.status " " obj.response {"</title>
 #  </head>
 #  <body>
 #    <h1>Error "} obj.status " " obj.response {"</h1>
 #    <p>"} obj.response {"</p>
 #   <br>Request URL: "} req.url {"
 #   <br>Request Host: "} req.http.host {"
 #    <h3>Guru Meditation:</h3>
 #    <p>XID(): "} req.xid {"</p>
 #  
 #    <address><a href="http://urlhere/">Some error msg</a></address>
 #  </body>
 # </html>
 # "};
 #    deliver;
 # }
diff --git a/varnish b/varnish
 #!/bin/bash

 #Interactive Varnish startup script. Does not run in daemon mode, mostly designed for OSX development.
 #Make sure your IPv6 /etc/hosts entries are commented out or you'll get this error:
 # Only one address is allowed.
 # Please specify which exact address you want to use, we found these:
 #   ::1
 #   fe80::1%lo0
 #   127.0.0.1 

 #One line example, default VCL routines built into Varnish.
 #/usr/local/sbin/varnishd -a blackbook.local:3000 -b blackbook.local:8080 -T blackbook.local:6082 


 #start up Varnish, listening on localhost:6081, with default backend to Rails on 3000, management on port 6082, storage set for 50m in /tmp, 
 BASE=`pwd`

 varnishd -a localhost:6081 -T localhost:6082 -F -s file,/tmp/varnish.storage,50M -f ${BASE}/config/app.vcl
	#-e This is a basic VCL configuration file for varnish. See the vcl(7)
	#man page for details on VCL syntax and semantics.
	#
	#Default backend definition. Set this to point to your content
	#server.
	#
	backend default {
	.host = "127.0.0.1";
	.port = "3000";
	}

	sub vcl_recv {
	#in vcl_revc you can "pass" , "pipe", or "lookup"
	#never cache non-GET methods
	if (req.request != "GET") {
	return(pipe); #pass will accomplish same, but apparently more varnish handling
	}
	# #allow static assets automatically
	# if (req.url ~ "\.(pdf\|png\|gif\|jpg\|swf\|css\|js)(/$\|/\?\|\?\|$)" ) {
	# remove req.http.cookie;
	# remove req.http.authenticate;
	# remove req.http.Etag;
	# remove req.http.If-None-Match;
	# lookup; #go to backend and see if there is an object
	# }
	#
	#dynamic ruleset for frontend caching, attempt to pull from cache on ALL GET requests.
	if (req.request == "GET") {
	# disable Etags && incoming cookies
	remove req.http.cookie;
	remove req.http.authenticate;
	remove req.http.Etag;
	remove req.http.If-None-Match;
	return(lookup); #go to backend and see if there is an object

	# i give up, no caching as default strategy
	}
	return(pass);
	}

	sub vcl_fetch {

	# fetch happens when we pass or try lookup and miss or otherwise go to backend.
	# we can make more assertions on the obj and possibly cache for future use.
	# deliver == cache
	# hit_for_pass == no caching

	# very important, we don't want to cache 500s
	# we are not letting varnish have a grace period to handle and error or slow backend.
	if (beresp.status >= 300) {
	return(hit_for_pass);
	}
	#
	#respect the backend from Rails private, no caching here
	if ( beresp.http.Cache-Control ~ "private") {
	return(hit_for_pass);
	}

	# #to be pulled from cache, we need the public set
	if (beresp.http.Cache-Control ~ "public") {
	unset beresp.http.Set-Cookie;
	#unset the cache control, else the browser will keep for that long too.
	#we want to control requests.
	unset beresp.http.Etag;
	unset beresp.http.Cache-Control;
	set beresp.http.Cache-Control = "no-cache"; #tell client to request a new one everytime
	set beresp.do_esi = true; #we will attempt to ESI process as well
	return(deliver);
	}
	#else we will try NOT cache by default , be safe
	return(hit_for_pass);

	}

	# this executes on every response from varnish
	sub vcl_deliver {
	if (obj.hits > 0) {
	set resp.http.X-Cache = "HIT";
	} else {
	set resp.http.X-Cache = "MISS";
	}
	}


	# #This is displayed if there is an error.
	# still have to nail the newer syntax for this...
	# sub vcl_error {
	# set obj.http.Content-Type = "text/html; charset=utf-8";
	# synthetic {"
	# <?xml version="1.0" encoding="utf-8"?>
	# <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
	# "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	# <html>
	# <head>
	# <title>"} obj.status " " obj.response {"</title>
	# </head>
	# <body>
	# <h1>Error "} obj.status " " obj.response {"</h1>
	# <p>"} obj.response {"</p>
	# <br>Request URL: "} req.url {"
	# <br>Request Host: "} req.http.host {"
	# <h3>Guru Meditation:</h3>
	# <p>XID(): "} req.xid {"</p>
	#
	# <address><a href="http://urlhere/">Some error msg</a></address>
	# </body>
	# </html>
	# "};
	# deliver;
	# }
	#!/bin/bash

	#Interactive Varnish startup script. Does not run in daemon mode, mostly designed for OSX development.
	#Make sure your IPv6 /etc/hosts entries are commented out or you'll get this error:
	# Only one address is allowed.
	# Please specify which exact address you want to use, we found these:
	# ::1
	# fe80::1%lo0
	# 127.0.0.1

	#One line example, default VCL routines built into Varnish.
	#/usr/local/sbin/varnishd -a blackbook.local:3000 -b blackbook.local:8080 -T blackbook.local:6082


	#start up Varnish, listening on localhost:6081, with default backend to Rails on 3000, management on port 6082, storage set for 50m in /tmp,
	BASE=`pwd`

	varnishd -a localhost:6081 -T localhost:6082 -F -s file,/tmp/varnish.storage,50M -f ${BASE}/config/app.vcl