WAL files are strictly sequential. This makes the WAL file sequence a “replay log” of changes. The concept is similar to Redis' AOF, MySQL's binlog and ...
if the log is located on a different disk from the main database files.
replayable deltas and written out as an ordered sequence of files called the “Write Ahead Log”, or WAL.
Since we can combine an indefinitely long sequence of WAL files for replay, continuous backup can be achieved simply by continuing to archive the WAL files .
PostgreSQL can recover itself in this way by replaying XLOG records written in WAL segment files in chronological order. Thus, PostgreSQL's XLOG records are ...
Since we can combine an indefinitely long sequence of WAL files for replay, continuous backup can be achieved simply by continuing to archive the WAL files .
PostgreSQL WAL retention is a very important topic for database management.
Setting up the standby via a base backup is similar, and is not described in detail in both places. One place refers you to the other. That is all ...
So this is a situation to be avoided by all means possible. Replication Slots. Replication in PostgreSQL works by processing WAL files. In order for ...
LSN (log sequence number --- in practice, a WAL file location) of the latest ...