varnish

varnish

Routes:

match '/test/:id' => 'dummy#test'
match '/user/:id' => 'dummy#user'

-------------------------------------

Controller:

def test
  Rails.logger.ap "*"*100
  response.headers['Cache-Control'] = "public, max-age=86400"
  render :layout => false
end
  
def user
  response.headers['Cache-Control'] = "public, max-age=86400"
  x = {
    "manoj" => "Manoj Mathai",
    "manish" => "Manish Mathai",
    "yadav" => "Nilesh Yadav"
  }
  render :text => x[params[:id]]
end

--------------------------------------
View:

<h1>Welcome</h1> 

<esi:include src="/user/<%= params[:id] %>" />

<h1>
Time is <%= Time.now %>
</h1>

--------------------------------------

VCL:

sub vcl_deliver {
        if (obj.hits > 0) {
                set resp.http.X-Cache = "HIT";
                set resp.http.X-Cache-Hits = obj.hits;
        } else {
                set resp.http.X-Cache = "MISS";
        }
}

sub vcl_recv {
        #unset req.http.Cache-Control;
        if (req.request == "PURGE") {
                return (lookup);
        }

}

sub vcl_hit {
        if (req.request == "PURGE") {
                purge;
                error 200 "Purged.";
        }
}

sub vcl_miss {
        if (req.request == "PURGE") {
                purge;
                error 200 "Purged.";
        }
}

sub vcl_fetch {
    remove beresp.http.Cache-Control;   
    if (req.url ~ "/test/") {
        set beresp.do_esi = true; /* Do ESI processing               */
    }
}

sub vcl_hash {
    hash_data(req.url);
    if (req.http.host) {
        hash_data(req.http.host);
    } else {
        hash_data(server.ip);
    }
    if(req.url ~ "/user/"){
      hash_data(req.http.cookie);
    }
    return (hash);
}

sub vcl_recv {
  if (req.http.Authorization) { 
    return (pass);          
  }
  return (lookup);
}