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Why do you need replication in PostgreSQL multiple slave?
Replication lets you perform analyses without affecting the operations of the master. You can use replication to scale out especially when you have a low number of writes and a high number of reads. In a single master multiple slave scenario, only one server (the master) is allowed to make changes to the data.
When to use multi master in PostgreSQL?
You can use replication to scale out especially when you have a low number of writes and a high number of reads. In a single master multiple slave scenario, only one server (the master) is allowed to make changes to the data. The other servers do not accept write queries from anywhere except the master. What is Multi-master Replication?
Why do we need real time data replication?
In a busy database environment with larger size databases, the need for real-time data replication is a common occurrence. Applications often need the production data to be replicated in real-time to remote sites for analytics and other critical business operations needs.
How does the type of data table affect replication?
The type of data table is accommodating has a great impact on replication performance. If the table is accommodating a BYTEA column with larger size binary data, then, the replication performance can take a hit. The impact of replication on network, CPU and Disk must be assessed carefully.
How does single master multiple slave replication work?
In a single master multiple slave scenario, only one server (the master) is allowed to make changes to the data. The other servers do not accept write queries from anywhere except the master. What is Multi-master Replication? Consider a situation where there are several connected database servers that can update the data.
Can you run multiple slave instances in MySQL?
Each time you start up a slave instance you shutdown the other mysql slave instances can be shutdown to keep load avg. to a minimum. Since 2011 the environment has changed a bit. Replication from multiple masters is now supported in MySQL 5.7 and MariaDB 10 – but they use slightly different syntax.