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https://dev.mysql.com/doc/refman/5.7/en/innodb-multi-versioning.html
Undo logs in the rollback segment are divided into insert and update undo logs. It keeps information about old versions of changed rows to support transactional features such as concurrency and rollback. This information is stored in the system ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-buffer-pools.html
For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency, by reducing contention as different threads read and write to cached pages. This feature is typically intended for ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-space-requirements.html
Each temporary sort file is large enough to hold one column of data, and each sort file is removed when its data is merged into the final table or index. Online DDL operations have the following space requirements: Temporary log files: A temporary ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-physical-structure.html
When new records are inserted into an InnoDB clustered index, InnoDB tries to leave 1/16 of the page free for future insertions and updates of the index records. With the exception of spatial indexes, InnoDB indexes are B-tree data structures.
https://dev.mysql.com/doc/refman/5.7/en/innodb-table-import.html
Otherwise, the table must be created on the same MySQL server instance into which it is being imported. This section describes how to import tables using the Transportable Tablespaces feature, which permits importing tables, partitioned tables, or ...
https://dev.mysql.com/doc/refman/5.7/en/installing-development-tree.html
This section describes how to install MySQL from the latest development source code, which is hosted on GitHub. To obtain the MySQL Server source code from this repository hosting service, you can set up a local MySQL Git repository. On GitHub, ...
https://dev.mysql.com/doc/refman/5.7/en/introduction.html
MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. The MySQL software delivers a very fast, multithreaded, multi-user, and robust SQL (Structured Query Language) ...
https://dev.mysql.com/doc/refman/5.7/en/invoking-programs.html
(Some information is given in Section 4.2.7, “Setting Environment Variables”.) After modifying your PATH setting, open a new console window on Windows or log in again on Unix so that the setting goes into effect. To invoke a MySQL program from ...
https://dev.mysql.com/doc/refman/5.7/en/keyring-aws-plugin.html
It also reads any encrypted keys contained in its storage file into its in-memory cache. Note The keyring_aws plugin is an extension included in MySQL Enterprise Edition, a commercial product. The keyring_aws keyring plugin communicates with the ...
https://dev.mysql.com/doc/refman/5.7/en/keyring-key-migration.html
If the running server was using the destination keystore before the migration and should continue to use it after the migration, it should be restarted after the migration to load all keys migrated into the destination keystore. A keyring migration ...