Webdev:Cesium:Beacons: Difference between revisions

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-=== Overview<br> ===
+= Overview =
 This page is for tracking beacon information from YSlow and PageSpeed. It is intended both as a reference '''and''' brainstorming tool.<br>
-<br>
+= YSlow&nbsp;Beacon Parameters =
-=== YSlow&nbsp;Beacon Parameters<br> ===
+*w – size of the page in bytes (v1 sent size in kilobytes)
+*o – overall YSlow grade calculated for the profile used
+*u – URL of the page tested
+*r – total amount of requests with empty cache
+*s – page identifier for yahoo pages (like yahoo music, sports, etc), blank on non-yahoo pages
+*i – testing profile used:
+**ydefault – YSlow (V2)
+**yslow1 – Classic (V1)
+**yblog – Small Site or Blog
+**or custom profile’s title with dash-encoded spaces
+*ynumreq – Make fewer HTTP requests
+*ycdn – Use a Content Delivery Network (CDN)
+*yexpires – Add Expires headers
+*ycompress – Compress components with gzip
+*ycsstop – Put CSS at top
+*yjsbottom – Put JavaScript at bottom
+*yexpressions – Avoid CSS expressions
+*yexternal – Make JavaScript and CSS external
+*ydns – Reduce DNS lookups
+*yminify – Minify JavaScript and CSS
+*yredirects – Avoid URL redirects
+*ydupes – Remove duplicate JavaScript and CSS
+*yetags – Configure entity tags (ETags)
+*yxhr – Make AJAX cacheable
+*yxhrmethod – Use GET for AJAX requests
+*ymindom – Reduce the number of DOM elements
+*yno404 – Avoid HTTP 404 (Not Found) error
+*ymincookie – Reduce cookie size
+*ycookiefree – Use cookie-free domains
+*ynofilter – Avoid AlphaImageLoader filter
+*yimgnoscale – Do not scale images in HTML
+*yfavicon – Make favicon small and cacheable
-*w – size of the page in bytes (v1 sent size in kilobytes)
+= PageSpeed Beacon Parameters =
-*o – overall YSlow grade calculated for the profile used
-*u – URL of the page tested
-*r – total amount of requests with empty cache
-*s – page identifier for yahoo pages (like yahoo music, sports, etc), blank on non-yahoo pages
-*i – testing profile used:
-*o ydefault – YSlow (V2)
-*o yslow1 – Classic (V1)
-*o yblog – Small Site or Blog
-*o or custom profile’s title with dash-encoded spaces
-*ynumreq – Make fewer HTTP requests
-*ycdn – Use a Content Delivery Network (CDN)
-*yexpires – Add Expires headers
-*ycompress – Compress components with gzip
-*ycsstop – Put CSS at top
-*yjsbottom – Put JavaScript at bottom
-*yexpressions – Avoid CSS expressions
-*yexternal – Make JavaScript and CSS external
-*ydns – Reduce DNS lookups
-*yminify – Minify JavaScript and CSS
-*yredirects – Avoid URL redirects
-*ydupes – Remove duplicate JavaScript and CSS
-*yetags – Configure entity tags (ETags)
-*yxhr – Make AJAX cacheable
-*yxhrmethod – Use GET for AJAX requests
-*ymindom – Reduce the number of DOM elements
-*yno404 – Avoid HTTP 404 (Not Found) error
-*ymincookie – Reduce cookie size
-*ycookiefree – Use cookie-free domains
-*ynofilter – Avoid AlphaImageLoader filter
-*yimgnoscale – Do not scale images in HTML
-*yfavicon – Make favicon small and cacheable<br>
-<br>
+Currently, Page Speed does not support beacons, but starting v1.2 it will, [[#PageSpeed 1.2|see more info below]].
-=== ShowSlow Beacon Parameters<br> ===
+= Future Beacon Parameters =
-TBD.
+A future goal is to have YSlow and PageSpeed beacon detailed information about a page's performance. This can be in addition to a normal GET request. The URL parameters can have basic information while a larger response in the POST body can contain detailed statistics regarding a page's assets and score.
-[http://code.google.com/p/page-speed/issues/detail?id=58 http://code.google.com/p/page-speed/issues/detail?id=58]<br>
+=== YSlow 2.0.1 ===
+Starting with v2.0.1, besides the existing beacon preference: beaconUrl and optinBeacon, a new preference will be added to control the information to be included in the beacon.
-<br>
+Preference Name: beaconInfo
+Possible values: "basic", "all", "grade", "stats", "comps" or a comma separated list of "grade", "stats" and "comps".
+Default value of the preference is basic. The YSlow beacon will be sent with HTTP GET. This is for backward compatibility.
+For all other values, the beacon will be sent by HTTP POST.
+New beacon parameters:
+* lt - Page load time (basic)
+* g - json tree of the resultset (scores of all rules in the ruleset) (grade)
+* w_c - page weight with primed cache (stats)
+* r_c - number of requests with primed cache (stats)
+* stats - json tree of stats, e.g. <pre>{"doc": { "r": 1, "w": 36.1 }, "js": {"r": 3, "w": 29.0 }</pre> (stats)
+* stats_c - json tree of stats with primed cache (stats)
+* comps - json tree of comps, e.g. <pre>{"doc": { "url": url, "w": size, "gzip": 36.1, "cr": 320, "cs": 971,"expires": "2009/10/11", "response": 537, "etag": "xxx-xx"}}</pre> (comps)
+[[Webdev:Cesium:Beacon:YSlow_2.0.1|Example beacon]]
+=== PageSpeed 1.2 ===
+Starting with v1.2, Google PageSpeed will start supporting beacons. You can see documentation in progress here: [http://code.google.com/p/page-speed/wiki/BeaconDocs http://code.google.com/p/page-speed/wiki/BeaconDocs]
+And original bug used for tracking this feature here: [http://code.google.com/p/page-speed/issues/detail?id=58 http://code.google.com/p/page-speed/issues/detail?id=58]