Legacy username/password sessions store authentication state on the server — creating scale issues and single points of failure. OAuth 2.0 combined with JSON Web Tokens (JWT) moves this to a stateless, token-based model that scales cleanly across microservices and mobile clients.

How it works in practice

  • OAuth 2.0 authorization — the user authenticates once via a trusted authorization server. Downstream APIs never see the password; they only see a short-lived access token.
  • JWT structure — a signed token contains the user's ID, roles, and expiry. Any API can verify the signature without a database call, dramatically reducing response latency.
  • Short-lived tokens + refresh tokens — access tokens expire in 15–60 minutes. A refresh token (stored securely, HttpOnly cookie) silently renews access without re-login.
  • SQL injection defence — parameterised queries and prepared statements ensure user input never reaches raw SQL. Token-based auth removes the session-hijacking vector entirely.

Our approach

Kishuna Technology implements this pattern across all client-facing APIs, ensuring enterprise-grade security without sacrificing developer experience.