Webdev:Meetings:2008-12-23: Difference between revisions

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 ** AMO Bandwagon feed working, lessons learned:
 *** Problem:
-**** Models yield lots of deeply nested arrays, even with lots of unbinding
+**** Models yield truckloads of deeply nested arrays, even with unbindFully()
-**** Sanitizing is heavily recursive with deeply nested arrays, is slow, and appears to tickle PHP-level memory leaks.
+**** Sanitizing is heavily recursive, slow, and appears to tickle PHP-level memory leaks with is_array() and other functions.
-**** This combination lead to an inability to build the feed in under 90 seconds and 64mb of RAM.  Since php.ini limits to 30 seconds and 16MB, this is fail.
+**** This combination lead to an inability to build the feed in under 90 seconds and 64mb of RAM.
+***** The function was called 1M times before optimization, and 50K after, still leaked memory like a sieve (12MB before first call, 64MB after last).
+***** Since php.ini limits to 30 seconds and 16MB, this is fail.
 *** Solution:
 **** Never feed Model result arrays straight into sanitizing.