Ensuring continuous operation and data protection is paramount for any business. PostgreSQL streaming replication offers a powerful solution for both disaster recovery (DR) and high availability (HA). This article dives deep into setting up and managing PostgreSQL streaming replication, covering essential configurations, different replication modes like synchronous and asynchronous, and advanced concepts such as cascading replication. Discover how to build a resilient database infrastructure that minimizes downtime and safeguards your critical data against unforeseen failures.