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41 lines
1.4 KiB
SQL
41 lines
1.4 KiB
SQL
-- patch-cache.sql
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-- 2003-03-22 <brion@pobox.com>
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--
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-- Add 'last touched' fields to cur and user tables.
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-- These are useful for maintaining cache consistency.
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-- (Updates to OutputPage.php and elsewhere.)
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--
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-- cur_touched should be set to the current time whenever:
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-- * the page is updated
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-- * a linked page is created
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-- * a linked page is destroyed
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--
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-- The cur_touched time will then be compared against the
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-- timestamps of cached pages to ensure consistency; if
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-- cur_touched is later, the page must be regenerated.
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ALTER TABLE /*$wgDBprefix*/cur
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ADD COLUMN cur_touched binary(14) NOT NULL default '';
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-- Existing pages should be initialized to the current
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-- time so they don't needlessly rerender until they are
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-- changed for the first time:
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UPDATE /*$wgDBprefix*/cur
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SET cur_touched=NOW()+0;
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-- user_touched should be set to the current time whenever:
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-- * the user logs in
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-- * the user saves preferences (if no longer default...?)
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-- * the user's newtalk status is altered
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--
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-- The user_touched time should also be checked against the
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-- timestamp reported by a browser requesting revalidation.
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-- If user_touched is later than the reported last modified
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-- time, the page should be rerendered with new options and
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-- sent again.
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ALTER TABLE /*$wgDBprefix*/user
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ADD COLUMN user_touched binary(14) NOT NULL default '';
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UPDATE /*$wgDBprefix*/user
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SET user_touched=NOW()+0;
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