Administration data
RELATIONAL DATA SYSTEMPostgreSQLRelational data & transactional systems
DEVNU / TECHNOLOGY / POSTGRESQL
We choose PostgreSQL when relationships, history and correctness matter.
Many business systems revolve around entities, states, permissions and transactions. PostgreSQL provides mature constraints, queries and operational tooling for that model rather than reducing data to key-value records.
What does PostgreSQL own in a project?
PostgreSQL is commonly the source of truth for operational data in DEVNU systems. Redis or other caches may accelerate specific paths, while durable records, relationships and history remain in the primary database.
Where the technology should solve a specific problem.
Users, roles and session metadata
Products, content and taxonomies
Transactional orders and workflows
Audit-friendly history
API data with explicit relationships
When we reach for it
Orders, users, products, content, permissions, workflows, invoices and other relation-heavy or transaction-heavy domains are natural PostgreSQL fits. JSONB can handle semi-structured areas without abandoning relational modelling entirely.
When we leave it out
For temporary caches, rate-limit counters or ephemeral sessions, forcing every access through PostgreSQL may create unnecessary load and contention. Very large analytics or specialist search workloads may also deserve different storage or indexing systems.
Using the tool is easy. Operating it well is the real work.
- 01Database constraints in addition to application validation
- 02Versioned migrations
- 03Indexes based on real query patterns
- 04Short deliberate transactions
- 05Database kept on a private network
- 06Tested backup and restore
The decisions matter more than the stack badge.
Relational columns or JSONB?
Data with stable joins, constraints and query patterns stays relational. JSONB serves genuinely flexible areas rather than acting as an escape from schema design.
When do we add an index?
Based on query plans and actual read patterns. Every index adds write and storage cost, so an important-looking column alone is not a reason to index it.
PostgreSQL or Redis?
PostgreSQL is the transactional source of truth; Redis usually serves temporary or extremely fast-access data. In many systems they complement rather than replace each other.
Projects where PostgreSQL is part of the recorded stack.
Industrial website & content administration
SUMY Website & Operations System
SUMY's bilingual industrial website, with an API, database and a dedicated admin area for pages, products, brands and incoming enquiries.
- React
- TypeScript
- NestJS
- PostgreSQL
- Prisma
- Docker
Telegram bot, Mini App & order automation
PasarGuard — Telegram commerce & operations
A personal product that brings ordering, wallet balance, service delivery and reseller operations into one Telegram bot and Mini App flow.
- Telegram
- React
- TypeScript
- FastAPI
- PostgreSQL
- Redis
- Docker
- Nginx
Research tools, bioinformatics & scientific workspace
DEVNU Science — Scientific Research Workspace
A connected research workspace that moves from a gene, protein, variant, disease or sequence into evidence, 3D structure, analysis and repeatable workflows without aimless database hopping.
- Next.js
- React
- TypeScript
- PostgreSQL
- Drizzle
- Better Auth
- GSAP
- Nginx
07 / RELATED SERVICES
Technology only matters inside a useful outcome.
Common questions about PostgreSQL
01Is PostgreSQL overkill for a small project?+
Not necessarily. When data is relational and likely to grow, a straightforward PostgreSQL setup can avoid a costly migration later. Tiny prototypes may still justify simpler storage.
02Are DEVNU databases exposed publicly?+
In standard deployments the database remains on a private service network, with limited and documented administrative access.
09 / NEXT STEP
Start with the problem. Choose the stack second.
If the project needs this technology, the reason should be visible in architecture, performance, user experience or maintenance cost.
Describe the project