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friendica/doc/database/db_cache.md

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docu - add schema of each db table
2015-12-28 02:50:25 +01:00
Table cache
===========
Update db cache table documentation
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Stores temporary data
docu - add schema of each db table
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| Field | Description | Type | Null | Key | Default | Extra |
| ------------ | ---------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
Update db cache table documentation
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| k | cache key | varchar(255) | NO | PRI | NULL | |
| v | cached serialized value | text | NO | | NULL | |
| expires | datetime of cache expiration | datetime | NO | MUL | 0001-01-01 00:00:00 | |
Fix for MySQL 5.7+ https://github.com/friendica/friendica/issues/2786 Only tested on Ubuntu 16.10 with MySQL 5.7.17. https://dev.mysql.com/doc/refman/8.0/en/timestamp-initialization.html https://dev.mysql.com/doc/refman/8.0/en/sql-mode.html#sqlmode_no_zero_date As of MySQL 5.7.4, NO_ZERO_DATE is deprecated. Patch based on the following search & replace (and then reverting some changes in libraries): ```sh grep -l '= "0000-00-00"' -r . | xargs sed -i -e "s/= \"0000-00-00\"/= '0000-00-00'/g" grep -l "0000-00-00" -r . | xargs sed -i -e "s/0000-00-00/0001-01-01/g" grep -l "!= '0001-01-01'" -r . | xargs sed -i -e "s/!= '0001-01-01'/> '0001-01-01'/g" grep -l " === '0001-01-01'" -r . | xargs sed -i -e "s/ === '0001-01-01'/ <= '0001-01-01'/g" grep -l " == '0001-01-01'" -r . | xargs sed -i -e "s/ == '0001-01-01'/ <= '0001-01-01'/g" grep -l "strpos(\$dob, '0000-') === 0" -r . | xargs sed -i -e "s/strpos(\$dob, '0000-') === 0/strpos(\$dob, '0000-') === 0 || strpos(\$dob, '0001-') === 0/g" grep -l 'array("", "0001-01-01")' -r . | xargs sed -i -e 's/array("", "0001-01-01")/array("", "0000-00-00", "0001-01-01")/g' grep -l "\$dob = '0000-'" -r . | xargs sed -i -e "s/\$dob = '0000-'/\$dob = '0001-'/g" ```
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| updated | datetime of cache insertion | datetime | NO | MUL | 0001-01-01 00:00:00 | |
docu - add schema of each db table
2015-12-28 02:50:25 +01:00
Return to [database documentation](help/database)