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MySQL: MySQL Group Replication, a plugin for virtual synchronous multi-master with conflict handling and distributed recovery was released with 5.7.17. Cluster Projects: MySQL Cluster supports conflict detection and resolution between multiple masters since version 6.3 for true multi-master capability for the MySQL Server.
SymmetricDS is open source software for database and file synchronization with Multi-master replication, filtered synchronization, and transformation capabilities. [2] It is designed to scale for a large number of nodes, work across low-bandwidth connections, and withstand periods of network outage. [3]
MySQL Cluster is designed around a distributed, multi-master ACID compliant architecture with no single point of failure.MySQL Cluster uses automatic sharding (partitioning) to scale out read and write operations on commodity hardware and can be accessed via SQL and Non-SQL (NoSQL) APIs.
Synchronous replication: Multi-master replication is provided in MySQL Cluster. [101] Virtual Synchronous: Self managed groups of MySQL servers with multi master support can be done using: Galera Cluster [102] or the built in Group Replication plugin [103] Full-text indexing and searching [b] Embedded database library; Unicode support [a]
Load balancing, however, sometimes uses data replication (especially multi-master replication) internally, to distribute its data among machines. Backup differs from replication in that the saved copy of data remains unchanged for a long period of time. [5] Replicas, on the other hand, undergo frequent updates and quickly lose any historical state.
Master may be used to mean a copy that has more significance than other copies in which case the term is an absolute concept; not a relationship. Sometimes the term master-slave is used in contexts that do not imply a controlling relationship. In database replication, the master database is the authoritative source. A replica database ...
A distributed SQL database is a single relational database which replicates data across multiple servers. Distributed SQL databases are strongly consistent and most support consistency across racks, data centers, and wide area networks including cloud availability zones and cloud geographic zones .
The replication process can be complex and time-consuming, depending on the size and number of the distributed databases. This process can also require much time and computer resources. Duplication, on the other hand, has less complexity. It identifies one database as a master and then duplicates that database. The duplication process is ...