What level of PostgreSQL expertise do I need for a typical business application?
For most business applications, you need someone with intermediate skills who can design efficient schemas, write optimized queries, and handle routine maintenance. Advanced expertise is only necessary for high-traffic applications or complex data requirements.
How can I verify that a candidate actually knows PostgreSQL beyond just listing it on their resume?
Ask them to walk through optimizing a slow query, explain their approach to database backups, or describe how they'd handle a database migration. Real expertise shows in their ability to explain trade-offs and provide specific examples from past projects.
Can PostgreSQL handle the same workloads as expensive commercial databases like Oracle?
Yes, PostgreSQL can handle most enterprise workloads that Oracle or SQL Server can, including high transaction volumes, complex queries, and large datasets. However, some specialized Oracle features may require workarounds or different approaches in PostgreSQL.
How well does PostgreSQL work with modern web frameworks and cloud platforms?
PostgreSQL integrates seamlessly with virtually all modern web frameworks and is fully supported by major cloud providers like AWS, Google Cloud, and Azure. Most popular programming languages have mature PostgreSQL drivers and ORM support.
How long does it typically take to set up PostgreSQL for a new business application?
Basic setup can be done in a few hours, but proper configuration, security hardening, and schema design usually takes 1-2 weeks. Complex migrations or custom requirements can take 1-3 months depending on data volume and business logic complexity.
What ongoing maintenance does PostgreSQL require after initial setup?
PostgreSQL needs regular maintenance including monitoring performance, managing backups, applying security updates, and periodic database optimization. Plan for 2-4 hours per week for a typical business application, more for high-traffic systems.
