Technical requirements

For this chapter, you will find three Docker environments in the repository:

• chapter18_logical_clear: contains two PostgreSQL installations ready for the configuration of a new logical replication.
• chapter18_logical_ready: contains two PostgreSQL installations with a new logical replication already active.
• chapter18_physical_logical: contains three PostgreSQL installations with a new logical replication made using a physical replication.

If you want to understand how to configure a new logical replication, you should use the first Docker environment; however, if you want to skip all the topics about configuration, you can use the second one. In the second Docker environment, which you can find on the publication server, you will find the forumdb database that we’ve used so far in the book; you’ll also find a logical replication of just the users table. Finally, the chapter18_physical_logical Docker environment will...