User login process sequence diagram
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This template is suitable for user login process design. It uses a sequence diagram to show the interaction process between users, front-end, back-end services and database (such as entering account, requesting verification, identity verification, returning results, etc.), helping to clearly understand the system interaction sequence and call relationship.
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2. Front-end basic verification
Returns \"Incorrect username or password\"
9. Returns login success and token
8. Cache token and user information (by user_id)
10. Store tokens locally
3. Send login request (encrypted)
Cache successful
Return to inspection results
user
11. Skip to Home/Dashboard
front-end interface
cache service
Returns \"Request parameter error\"
Returns user records (including password hash)
displays an error message
user database
7. Update last login time and IP
6. Generate Access Tokens (JWT) & Refresh Tokens
Display error prompt
5. Query user information based on user name
authentication service
1. Enter username/password
update was successful
4. Check login frequency limit (IP+ username)
Return to \"Operation too frequently\"
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