friendica-github/doc/database/db_cache.md

Table cache
===========

Stores temporary data

| Field        | Description                        | Type         | Null | Key | Default             | Extra |
| ------------ | ---------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
| 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 |       |
| updated      | datetime of cache insertion        | datetime     | NO   | MUL | 0001-01-01 00:00:00 |       |

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docu - add schema of each db table 2015-12-28 01:50:25 +00:00			`Table cache`
			`===========`

Update db cache table documentation 2018-03-01 04:48:54 +00:00			`Stores temporary data`

docu - add schema of each db table 2015-12-28 01:50:25 +00:00			`\| Field \| Description \| Type \| Null \| Key \| Default \| Extra \|`
			`\| ------------ \| ---------------------------------- \| ------------ \| ---- \| --- \| ------------------- \| ----- \|`
Update db cache table documentation 2018-03-01 04:48:54 +00:00			`\| 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" ``` 2017-04-11 21:00:45 +00:00			`\| updated \| datetime of cache insertion \| datetime \| NO \| MUL \| 0001-01-01 00:00:00 \| \|`
docu - add schema of each db table 2015-12-28 01:50:25 +00:00
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