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authorzotlabs <mike@macgirvin.com>2018-02-16 12:42:02 -0800
committerzotlabs <mike@macgirvin.com>2018-02-16 12:42:02 -0800
commitf492f808f4861ae9937dcaf3bf8476513ae1c091 (patch)
treedba3179893ab7beae238568a87578f2a498f12aa /include
parent27cd26ec1e26b6c389a623395687af5052f0b5a1 (diff)
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refactor of the DB update system. Updates are now stored individually in Zotlabs/Update/_nnnn.php and are objects; so only the pending updates need to be loaded and executed rather than all historical updates. There is one single number (DB_UPDATE_VERSION) representing the current version and it is EQUAL TO the last known update. A dummy update _1201 was created to address the difference in counting behaviour; it will be executed on the next change of DB_UPDATE_VERSION as well as the next update. The database config values are also loaded from disk on every update immediately before setting the update lock in order to reduce timing conflicts and race conditions.
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