Flask session using the default configuration to modify the session does not take effect

 

flask session related

Using flask, the default sessio is stored in the browser's cookie. When the request returns, the session will be written in the cookie, but when writing, the default is not rewritten every time.

For example the following example

 

 #Original session {'k1': 1, 'k2': 'V2'} 
    session[ ' user_info ' ][ ' k1 ' ]=2
     #This way, the internal value session will not be rewritten

Modify becomes true only when the __setitem__ method or __deletitem__ method of the session object is called

  #Method 1 session.modified = True #Method 
  2 Set the configuration parameter SESSION_REFRESH_EACH_REQUEST= True 
 Recommended method 2 If there is a timeout, you need to refresh when you access. You 
need to set session.parmanent=True when logging in

 

Session uses redis configuration

 

    SESSION_KEY_PREFIX = ' hello '   # The key in redis will be prefixed with uuid money 
    SESSION_TYPE = ' redis ' 
    SESSION_REDIS = Redis(host= ' 127.0.0.1 ' ,port=6379 )

 Also import from flask_session import Session

 Execute Session(app) after the app has loaded the configuration

 

 

 

 

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