Principles of WAL-based Point-in-Time Recovery

Designing Cross-Region WAL Shipping and Replication

Restore Automation and Cross-Cloud Workflows

Verifying Consistency, Measuring Latency, and Practicing Failover

Practical Application: Playbooks, Scripts, and Checklists

A point-in-time restore is only as reliable as the continuity, accessibility, and integrity of your WAL stream; if any segment is missing or unreachable at restore time, your PITR window collapses. Treat the WAL as the immutable, authoritative change-log and design shipping, storage, and restore automation around the expectation that you will restore to arbitrarily precise moments in production history.

The pain you feel is predictable: streaming replication inside a single region keeps your RPO low while the region is healthy, but it fails to give you a durable cross-cloud recovery target when an entire region or cloud provider becomes unavailable. Manual restores from cold copies cost hours and produce inconsistent timelines.…