Tell about your experience working with database management systems.

In my practice, I have worked with various database management systems (DBMS), including relational and non-relational.

• Relational DBMS: PostgreSQL, MySQL. Used them for storing structured data, creating complex queries, indexes, transactions.
• Non-relational DBMS: MongoDB, Redis. Applied for caching, storing documents, and quick data access.

I also have experience in configuring replication, backups, monitoring database performance. As part of DevOps tasks — automating database deployment, tuning parameters for load optimization, and ensuring fault tolerance.