nginx.conf

gistfile1.txt

server {
    listen   9090;
    server_name  cache.beta2.asiaclassified.com;

    root   /var/www/current/public;

    set $rooty /var/www/currentpublic;
    large_client_header_buffers 4 16k;

    location /content {
        internal;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME $rooty/index.php;
        include fastcgi_params;
    }

    location /content_esi {
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_param  SCRIPT_FILENAME $rooty/index.php;
        include fastcgi_params;
    }

    location = /redis-get {
        internal;
        # set_unescape_uri is provided by ngx_set_misc
        # set_unescape_uri $query $arg_query;
        set $key  $arg_key;
        redis2_query get $key;
        redis2_pass 127.0.0.1:6379;
    }

    location = /redis-set {
        internal;
        lua_need_request_body on;

        client_max_body_size 100k;
        client_body_in_single_buffer on;

        # set_unescape_uri is provided by ngx_set_misc
        # set_unescape_uri $query $arg_query;
        set $key  $arg_key;
        redis2_query set $key $request_body;
        redis2_pass 127.0.0.1:6379;
    }

    location = /redis-expire {
        internal;
        set $key  $arg_key;
        redis2_query expire $key 60;
        redis2_pass 127.0.0.1:6379;
    }

    location / {
        default_type  text/html;
        set $key  $request_uri;
        set_sha1 $key;

        proxy_pass_request_headers off;
        keepalive_timeout 0;

       content_by_lua '
            function literalize(str)
                return str:gsub("[%(%)%.%%%+%-%*%?%[%]%^%$]", function(c) return "%" .. c end)
            end

            local key = ngx.var.key;
            local json = require("yajl");
            local res;

            -- find content in redis for this key
            local parser = require("redis.parser")
            local ctn;
            local content;
            local process_esi = false;

            if res == nil then
                content = ngx.location.capture("/content"..ngx.var.uri, {args = ngx.var.args});
                if content.status == 302 or content.status == 301 then
                    if content.header["Location"]~= ngx.var.uri then
                        ngx.redirect(content.header["Location"], content.status);
                    end
                end
                if content.header["Esi-Enabled"] ~= nil then
                    process_esi = true;
                end
                if content.header["Esi-Cache-Enabled"] ~= nil then
                    ngx.location.capture("/redis-set?key="..key, { method = ngx.HTTP_POST, body = content.body });
                    ngx.location.capture("/redis-expire?key="..key);
                end;
                ctn = content.body
                for k,hed in pairs(content.header) do
                    ngx.header[k] = hed;
                end
            else
                ctn = res;
                process_esi = true;
            end

            if process_esi then
                local mtc = string.gmatch(ctn, "(<esi:include src=\'([^\']*)\'></esi:include>)")

                for esi in mtc
                    do
                        local urls = string.gmatch(esi, "src=\'([^\']*)\'")
                        for url in urls
                            do
                                local content2 = ngx.location.capture("/content_esi"..url);
                                esi = string.gsub(esi, "%?", "%%?");
                                tmp = string.gsub(ctn, esi, literalize(content2.body));
                                if tmp ~= nil then
                                    ctn = tmp;
                                else
                                end
                            end
                    end
            end

            -- if not find just forward it to the content

           ngx.print(ctn);
       ';

    }
}