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BCS Platform API

Active ecosystem core with security, observability, and stable contracts.

Node.js Express PostgreSQL Docker

Context

Multiple products need consistency and a stable core.

Problem

Isolated APIs, missing standards, and high integration costs.

Goal

Build a modular backend with clear contracts and access control.

Technical decisions

  • Domain driven architecture
  • Structured logging for observability
  • Versioning and documentation from day one

Architecture

Core API with independent services, security gateway, and versioned contracts.

Web + Mobile scope

  • Core services
  • Gateway
  • Documentation
  • Base integrations

Challenges and trade-offs

  • Balance security and speed
  • Standardize contracts
  • Continuous monitoring

Results

  • Faster integration
  • Fewer integration errors
  • Controlled scaling

Learnings

  • Document from day one
  • Automate health checks
  • Active monitoring

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