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Important concepts in simplified manner, so you know what to expect
TBD: diagram 1. Create replication slot This way, you preserve WAL (new changes) from being deleted. This would also create a snapshot of a current state. Snapshot can be exported, or reused in current transaction. 2. Import existing data. In replication only changes are streamed. Current state needs to be backuped manually. Physical replication: There is a mechanism to make a backup of a running server, called “base backup”....
Write-Ahead Log docs As it states in name, it’s log that’s written BEFORE any actual changes are made. The most important thing, WAL can be replayed and will always give same result. Being compact binary representation of operations and minimal data used in them, gives us few functions: Ability to restore after crash Replicate data by transfering log segments and replaying them in replica nodes. Replacing multiple random writes with single sequential write....
How to build small multiarch image using Github Workflow
Copy-paste example of terraform states manipulation.
The power of sequential WAL decoding.
What if candidate is smarter than you?.. How to check knowledge and experience within few hours?..
Weird behavior when usign subkeys. The mistery of exclamation mark.