Answer
WAL archiving stores old WAL segments for point-in-time recovery and disaster recovery.
Quick Answer
WAL archiving copies WAL segment files to a separate location (another disk, S3, network share) using the archive_command parameter. Used for: Point-In-Time Recovery (PITR) - restore to any moment by replaying archived WAL, and building standbys from a base backup + WAL archives. Essential for DR strategy when you need recovery beyond the current WAL on disk.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
Want to bookmark, take notes, or join discussions?
Sign in to access all features and personalize your learning experience.
Source: SugharaIQ