User Session Management & 2FA Device Tokens ER Schema

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ER diagram showing users, refresh sessions, trusted devices, and two factor backup codes tables with foreign keys and relationships.

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What it shows

Hash refresh tokens and rotate family chains on every renewal cycle.
Bind sessions to device fingerprints and IP ranges to spot session theft.
Store single-use 2FA recovery codes with explicit used timestamps.

The takeaway

Pair rotating refresh tokens with trusted device footprints to revoke hijacked credentials instantly.

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