Worked on the vaultwarden repository to deliver a reliability-focused fix addressing database connection handling in Rust-based backend systems. The work centered on enforcing strict validation of the DATABASE_URL environment variable, ensuring that unrecognized formats are rejected rather than silently defaulting to SQLite, which previously posed a risk of data loss in containerized deployments. The solution replaced abrupt panics with controlled error propagation using idiomatic Rust patterns, improving both error messaging and observability. Documentation was updated to clarify correct SQLite connection requirements and error behaviors. This contribution demonstrated careful attention to backend development practices and robust database management within a production environment.