In Database systems that use logical replication, replication slots are especially important for database replication. The logical replication mechanism in PostgreSQL’s database system supports replication
Category: PostgreSQL
![Introduction to WAL files and Replication Slots in PostreSQL](https://www.exatosoftware.com/blog/storage/2023/10/9.png)
PostgreSQL and many other relational database management systems (RDBMS) use Write-Ahead Logging (WAL) as a crucial component to guarantee data integrity, durability, and crash recovery.
![Application of replication slots in PostgreSQL](https://www.exatosoftware.com/blog/storage/2023/10/2.png)
Replication slots in PostgreSQL are a mechanism for streaming physical and logical replication to keep the standby servers current with changes from the primary server.