𝗦𝗤𝗟 𝘃𝘀 𝗡𝗼𝗦𝗤𝗟 𝗶𝗻 𝟮𝟬𝟮𝟱: 𝗔 𝗗𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗚𝘂𝗶𝗱𝗲

𝗦𝗤𝗟 𝘃𝘀 𝗡𝗼𝗦𝗤𝗟 𝗶𝗻 𝟮𝟬𝟮𝟱: 𝗔 𝗗𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗚𝘂𝗶𝗱𝗲

Stop asking which database is better. Ask which one fits your project. Most apps use both.

Use PostgreSQL first. It handles tables, documents, and search. It is the right choice for most apps.

Choose other databases for specific needs:

• Document stores for flexible data.
• Key-value stores for speed and caching.
• Wide-column stores for high write loads.
• Graph databases for social networks and connections.

Follow these rules for performance:

• Index columns in WHERE and JOIN clauses.
• Check queries your ORM generates. Avoid the N+1 problem.
• Use a connection pooler. Database connections are expensive.

Keep your data safe:

• Test backups monthly. A backup you never restore is a hope.
• Use point-in-time recovery to fix accidental deletions.
• Use EXPLAIN ANALYZE to read query plans. Stop guessing.

Your action plan:

• This week: Fix the three slowest queries.
• This month: Set up slow query alerts.
• This quarter: Run a recovery drill.

Source: https://dev.to/therizwansaleem/sql-vs-nosql-in-2025-a-practical-decision-guide-for-application-developers-3iil Optional learning community: https://t.me/GyaanSetuAi