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https://dev.mysql.com/doc/refman/8.0/en/group-replication-distributed-recovery.html
Whenever a member joins or rejoins a replication group, it must catch up with the transactions that were applied by the group members before it joined, or while it was away. The joining member begins by checking the relay log for its ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-functions-for-new-primary.html
The following function enables you to set a member of a single-primary replication group to take over as the primary. The current primary becomes a read-only secondary, and the specified group member becomes the read-write primary. The function can ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-limitations.html
Limit on Group Size Limits on Transaction Size The following known limitations exist for Group Replication. Note that the limitations and issues described for multi-primary mode groups can also apply in single-primary mode clusters during a ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-performance-xcom-cache-increase.html
If a member is absent for a period that is not long enough for it to be expelled from the group, it can reconnect and start participating in the group again by retrieving missed transactions from another member's XCom message cache. However, if the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-upgrading-member.html
This section explains the steps required for upgrading a member of a group. This procedure is part of the methods described at Section 20.8.3.3, “Group Replication Online Upgrade Methods”. The process of upgrading a member of a group is common ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication.html
This chapter explains MySQL Group Replication and how to install, configure and monitor groups. MySQL Group Replication enables you to create elastic, highly-available, fault-tolerant replication topologies. Groups can operate in a single-primary ...
https://dev.mysql.com/doc/refman/8.0/en/host-cache.html
The MySQL server maintains an in-memory host cache that contains information about clients: IP address, host name, and error information. The Performance Schema host_cache table exposes the contents of the host cache so that it can be examined ...
https://dev.mysql.com/doc/refman/8.0/en/index-condition-pushdown-optimization.html
Index Condition Pushdown (ICP) is an optimization for the case where MySQL retrieves rows from a table using an index. Without ICP, the storage engine traverses the index to locate rows in the base table and returns them to the MySQL server which ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-buffer-page-lru-table.html
The INNODB_BUFFER_PAGE_LRU table provides information about the pages in the InnoDB buffer pool; in particular, how they are ordered in the LRU list that determines which pages to evict from the buffer pool when it becomes full. The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-cmpmem-table.html
The INNODB_CMPMEM and INNODB_CMPMEM_RESET tables provide status information on compressed pages within the InnoDB buffer pool. The INNODB_CMPMEM and INNODB_CMPMEM_RESET tables have these columns: PAGE_SIZE The block size in bytes. PAGES_USED The ...