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Multiple Servers
In MySQL, multiple servers can be used to create a high-availability database architecture that improves performance and ensures data redundancy. This is achieved through a technique called database replication, where one master server acts as the primary database, and multiple slave servers act as replicas that can serve read-only queries and backup the data.
The master server receives all write requests and applies them to its database. It then sends the changes to the slave servers, which update their databases accordingly. This ensures that all servers have the same data, and any queries sent to the slave servers will return consistent results.
Additionally, load balancing can be implemented by using multiple read-only slave servers to distribute read requests among them, improving the overall performance of the system. In case of failure of the master server, one of the slave servers can be promoted to take its place and become the new master server. Overall, using multiple servers in MySQL DB can provide a robust and scalable solution for managing data in high-traffic environments, ensuring data redundancy, improving performance, and reducing the risk of downtime.
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