Piwik's current default recommended JS for loading creates a <script> tag via document.write(). In addition to being generally evil, this means the browser doesn't know it's going to need piwik.js until that chunk of script gets executed... which can't happen until all scripts referenced *before* it have been loaded and executed.
The only reason for that bit of script though seems to be to pick 'http' or 'https' depending on the current page's scheme. This can be done more simply by using a protocol-relative link (eg "//piwik.status.net/piwik.js"), which the browser will resolve as appropriate. Since it's now sitting in the <script> tag, the browser's lookahead code will now see it and be able to start loading it while earlier things are parsing/executing.
May be better still to move to an asynchronous load after DOM-ready, but I'm not sure if that'll screw with the analytics code (eg, not being able to start things on the DOM-ready events since they're past).
The default full build of OpenLayers.js is 943kb as of 2.10; this gzips down to a couple hundred kb
but is still rather nasty, plus loading it off a remote host could slow things down.
Using a local copy let us cut down the size significantly by discarding unused features, and further
minification with yui-compressor shaves a bit more off. Cuts down to about 1/5 the size of the
original.
Also threw in a bundled & minified copy of the Mapstraction classes plus our usermap.js,
which covers the common case of using the default OpenLayers provider. This cuts out three
additional script loads, two of which weren't getting launched until after the mxn.js main
file got loaded.
Included Makefile will recreate the OpenLayers.js using the statusnet.cfg strip configuration file
and yui-compressor to do some extra minification at the end. Requires fetching the OpenLayers
source download and dropping it in:
http://openlayers.org/download/OpenLayers-2.10.tar.gz
$config['twitter']['ignore_errors'] = true;
A longer-term solution is to patch up the indirect retry handling to count retries better, or delay for later retry sensibly.
Most annoying error case being where the notice was already faved or deleted on Twitter! :)
Such errors will now just fail out and log a note to the syslog -- the rest of what we were doing will continue on unhindered, so you can still delete, favorite, etc and it just won't sync the info over in that case.
When the retweet failed with a 403 error (say due to it being a private tweet, which can't be retweeted) we would end up mishandling the return value from our internal error handling.
Instead of correctly discarding the message and closing out the queue item, we ended up trying to save a bogus twitter<->local ID mapping, which threw another exception and lead the queue system to re-run it.
- Fixed the logic check and return values for the retweet case in broadcast_twitter().
- Added doc comments explaining the return values on some functions in twitter.php
- Added check on Notice_to_status::saveNew() for empty input -- throw an exception before we try to actually insert into db. :)
Data are sent to the 'info' level of logging, like so:
[lazarus.local:4812.86b23603 GET /mublog/api/statuses/friends_timeline.atom?since_id=1353]
STATLOG action:apitimelinefriends method:GET ssl:no query:since_id cookie:no auth:yes
ifmatch:no ifmod:no agent:Appcelerator Titanium/1.4.1 (iPhone/4.1; iPhone OS; en_US;)
Fields:
* action: case-normalized name of the action class we're acting on
* method: GET, POST, HEAD, etc
* ssl: Are we on HTTPS? 'yes' or 'no'
* query: Were we sent a query string? 'yes', 'no', or 'since_id' if the only parameter is a since_id
* cookie: Were we sent any cookies? 'yes' or 'no'
* auth: Were we sent an HTTP Authorization header? 'yes' or 'no'
* ifmatch: Were we sent an HTTP If-Match header for an ETag? 'yes' or 'no'
* ifmod: Were we sent an HTTP If-Modified-Since header? 'yes' or 'no'
* agent: User-agent string, to aid in figuring out what these things are
The most shared-cache-friendly requests will be non-SSL GET requests with no or very predictable
query parameters, no cookies, and no authorization headers. Private caching (eg within a supporting
user-agent) could still be friendly to SSL and auth'd GET requests.
We kind of expect that the most frequent hits from clients will be GETs for a few common timelines,
with auth headers, a since_id-only query, and no cookies. These should at least be amenable to
returning 304 matches for etags or last-modified headers with private caching, but it's very
possible that most clients won't actually think to save and send them. That would leave us expecting
to handle a lot of timeline since_id hits that return a valid API response with no notices.
At this point we don't expect to actually see if-match or if-modified-since a lot since most of our
API responses are marked as uncacheable; so even if we output them they're not getting sent back to
us.
Random subsampling can be enabled by setting the 'frequency' parameter smaller than 1.0:
addPlugin('ApiLogger', array(
'frequency' => 0.5 // Record 50% of API hits
));
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