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https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-developing.html
Typically, writing an application for the InnoDB memcached plugin involves some degree of rewriting or adapting existing code that uses MySQL or the memcached API. With the daemon_memcached plugin, instead of many traditional memcached servers ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-setup.html
Normally, the memcached data also disappears at this point, and you would require application logic to load the data back into memory when memcached is restarted. This section describes how to set up the daemon_memcached plugin on a MySQL server.
https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-compression-oltp.html
innodb_compression_failure_threshold_pct specifies a cutoff point for compression failures during updates to a compressed table. Traditionally, the InnoDB compression feature was recommended primarily for read-only or read-mostly workloads, such as ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-row-format.html
In addition, there is a 6-byte transaction ID field and a 7-byte roll pointer field. A record contains a pointer to each field of the record. If the total length of the fields in a record is less than 128 bytes, the pointer is one byte; otherwise, ... The row format of a table determines how its rows are physically stored, which in turn can affect the performance of queries and DML ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-table-import.html
Also, you should export all foreign key related tables at the same logical point in time, as ALTER TABLE ... This section describes how to import tables using the Transportable Tablespaces feature, which permits importing tables, partitioned ...
https://dev.mysql.com/doc/refman/8.0/en/internal-temporary-tables.html
If the physical_disk instrument reports a value other than 0 and memory-mapped files are used as the TempTable overflow mechanism, a TempTable memory limit was reached at some point. In some cases, the server creates internal temporary tables while ...
https://dev.mysql.com/doc/refman/8.0/en/json-function-reference.html
Table 14.22 JSON Functions Name Description Introduced Deprecated -> Return value from JSON column after evaluating path; equivalent to JSON_EXTRACT(). ->> Return value from JSON column after evaluating path and unquoting the result; equivalent to ...
https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html
path is a JSON path pointing to a location in the document. The functions in this section perform search or comparison operations on JSON values to extract data from them, report whether data exists at a location within them, or report the path to ...
https://dev.mysql.com/doc/refman/8.0/en/json-utility-functions.html
This section documents utility functions that act on JSON values, or strings that can be parsed as JSON values. JSON_PRETTY() prints out a JSON value in a format that is easy to read. JSON_STORAGE_SIZE() and JSON_STORAGE_FREE() show, respectively, ...
https://dev.mysql.com/doc/refman/8.0/en/json-validation-functions.html
As before, you can see this by attempting to insert the value into the geo table, then issuing SHOW WARNINGS afterwards: mysql> INSERT INTO geo VALUES(@point3); ERROR 3819 (HY000): Check constraint 'geo_chk_1' is violated. Beginning with MySQL ...