Explain PostgreSQL replication types and their use cases.

PostgreSQL Replication Types:

Streaming Replication:
• Real-time data synchronization
• Master-slave setup
• Hot standby for read queries
• Automatic failover support

Logical Replication:
• Table-level replication
• Cross-version compatibility
• Selective data replication
• Multi-master possible

Physical Replication:
• Block-level copying
• Entire database cluster
• Same PostgreSQL version required

Use Cases:
• High availability
• Load balancing
• Disaster recovery
• Data warehousing