What is Replication?

June 23, 2023 | por dbsnoop

replication perks in MySQL

While some database servers, like MySQL, support replication natively, others require third-party software.

Data from one MySQL database server (the source) can be replicated to one or more MySQL database servers through replication (the replicas). Replicas do not need to be continually linked to the source in order to get updates from it because replication is by default asynchronous. You can replicate all databases, particular databases, or even specific tables inside a database, depending on the setup.

Replication in MySQL has several benefits, including:

System Sharding, which distributes the workload across multiple clones to enhance performance. In this setup, the source server of the replica must handle all writes and changes. However, reads can occur on one or more copies. Since the source is used only for updates, this architecture can significantly speed up reads across an increasing number of replicas, while also enhancing write performance.

Data security: Since data is duplicated to the replica and the replica has the ability to pause the replication process, backup services can be used on the replica without affecting the source data that corresponds to them.

Analytics can be used to create real-time data on the source while analyzing it on the replica without degrading the performance of the source.

Long-distance data dissemination – without having ongoing access to the source, replication can be used to make a local copy of the data that a remote location can use.

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