Selected Java Interview Questions

Jul 10, 2023 · Backend Development

Designing a Unified Multi‑Account Login System with Phone, Password, and Third‑Party Authentication

This article outlines a comprehensive approach to building a scalable multi‑account login system that supports phone‑number/password, phone‑number/verification‑code, and various third‑party OAuth providers, detailing workflow steps, database schema, advantages, drawbacks, and a one‑click login integration.