Tagged articles

authentication flow

2 articles · Page 1 of 1

Jun 26, 2026 · Backend Development

How QR Code Login Works: The Mechanism Behind Douyin’s Scan‑to‑Login

This article breaks down the QR code login process used by Douyin, explaining how the system identifies the user, proves their identity through a token‑based authentication flow, and details each step from QR generation to final confirmation on the PC side.

LoginQR Codeauthentication flow

0 likes · 13 min read

How QR Code Login Works: The Mechanism Behind Douyin’s Scan‑to‑Login

Programmer DD

May 16, 2021 · Backend Development

Designing Scalable Multi-Account Login: Strategies, Flows, and Database Schemas

This article explains the technical design of multi‑account unified login, covering startup‑phase username/password and phone‑number authentication flows, detailed database table structures, and third‑party OAuth2 integration with practical implementation steps and diagrams.

Third-Party Integrationauthentication flowdatabase-schema

0 likes · 9 min read

Designing Scalable Multi-Account Login: Strategies, Flows, and Database Schemas