PostgreSQL supports several different replication options options, including:
Streaming replication: This is the most common way to achieve high availability with PostgreSQL, and it involves setting up one or more slave servers and using streaming replication to keep their copies of the database up-to-date with the primary copy on the master server.
Logical replication: This involves replicating individual database objects (such as tables or views) rather than the entire database. This can be useful for applications that only need to access a subset of the data on the master server.
File-based replication: This involves copying the entire database files from the master server to the slave server, rather than just the write-ahead logs (WALs) used in streaming replication. This can be useful in certain situations where streaming replication cannot be implemented.
Asynchronous replication: This involves sending WALs from the master server to the slave server at regular intervals, rather than continuously. This can be useful in situations where the master and slave servers are located far apart, or when the network connection between them is unreliable.
The appropriate replication strategy for a given situation will depend on the specific requirements of the application and the available resources. This is where our consultants can help you choose the replication options that best fits your business and technical requirements. We will also help you implement and test replication as well as provide appropriate operational documentation.
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