How does replication occur through WAL?

Replication via WAL (Write-Ahead Logging) works as follows:

1. All changes are first written to the WAL log — a sequential operation log.
2. This log is transmitted to the replica (slave), which replays the operations from the WAL, applying changes to its database.
3. This approach ensures data consistency and allows for quick recovery after failures.

In Go, WAL transmission over the network can be implemented, for example, by sending records via a TCP connection, and the replica applies them in the same order as the master.