Normal session vs Memcachedsession vs Redissession

I. Normal session (data stored in memory)

#!/usr/bin/env python#-*-coding:utf-8-*-from hashlib import sha1import osimport timeimport jsoncreate_session_id = Lamb Da:sha1 (bytes ('%s%s '% (os.urandom (+), Time.time ()), encoding= ' Utf-8 '). Hexdigest ()
Class Cachesession:session_container = {} session_id = "__sessionid__" def __init__ (self, handler): Self.  Handler = Handler Client_random_str = Handler.get_cookie (cachesession.session_id, None) if Client_random_str            and client_random_str in CacheSession.session_container:self.random_str = Client_random_str else: Self.random_str = create_session_id () cachesession.session_container[self.random_str] = {} expire S_time = time.time () + CONFIG. Session_expires #超时时间 Handler.set_cookie (cachesession.session_id, Self.random_str, Expires=expires_time) def _ _getitem__ (self, key): ret = Cachesession.session_container[self.random_str].get (key, None) return ret de F __setitem__ (self, Key, value): Cachesession.session_container[self.random_str][key] = value def __delitem__ (SE LF, key): If key in Cachesession.session_container[self.random_str]: del Cachesession.session_contAiner[self.random_str][key] 

Second, the session is stored in the cache (Memcache)

#!/usr/bin/env python#-*-coding:utf-8-*-import configfrom hashlib import sha1import osimport timeimport jsonimport MEMC Acheconn = Memcache. Client ([' 192.168.11.119:12000 '], debug=true, cache_cas=true) create_session_id = lambda:sha1 (bytes ('%s%s '% (  Os.urandom (+), Time.time ()), encoding= ' Utf-8 ')). Hexdigest () class memcachedsession:session_id = "__sessionid__" def __init__ (self, handler): Self.handler = handler # get random string from client Client_random_str = Handler.get_cookie (memcachedsession.session_id, None) # If you get a random string from the client if Client_random_str and Conn.get (Client_rando            M_STR): Self.random_str = client_random_str else:self.random_str = create_session_id () Conn.set (Self.random_str, Json.dumps ({}), CONFIG. Session_expires) #config. Session_expires The timeout time set in the matching file Conn.set (self.random_str, Conn.get (self.random_str), config. Session_expires) Expires_time = time.time () + CONFIG. Session_expires haNdler.set_cookie (memcachedsession.session_id, Self.random_str, Expires=expires_time) def __getitem__ (self, key): ret = Conn.get (self.random_str) ret_dict = json.loads (ret) result = Ret_dict.get (Key,none) return re        Sult def __setitem__ (self, Key, value): ret = Conn.get (self.random_str) ret_dict = json.loads (ret) Ret_dict[key] = value Conn.set (self.random_str, Json.dumps (ret_dict), config.        Session_expires) def __delitem__ (self, key): ret = Conn.get (self.random_str) ret_dict = json.loads (ret) Del Ret_dict[key] Conn.set (Self.random_str, Json.dumps (ret_dict), config. Session_expires)

Third, the session is stored in the cache (Redis)

#!/usr/bin/env python#-*-coding:utf-8-*-import configfrom hashlib import sha1import osimport timeimport jsonimport Redi Spool = Redis. ConnectionPool (host= ' 192.168.11.119 ', port=6379) R = Redis. Redis (connection_pool=pool) create_session_id = lambda:sha1 (bytes ('%s%s '% (os.urandom (+), Time.time ()), encoding= ' Utf-8 '). Hexdigest () class redissession:session_id = "__sessionid__" def __init__ (self, handler): Self.handle R = Handler # get random string from client Client_random_str = Handler.get_cookie (redissession.session_id, None) # if from        The client obtains the random string if Client_random_str and R.exists (client_random_str): Self.random_str = Client_random_str Else:self.random_str = create_session_id () r.hset (Self.random_str,none,none) R.expire ( Self.random_str, CONFIG. session_expires) #设置超时时间 expires_time = time.time () + CONFIG. Session_expires Handler.set_cookie (redissession.session_id, Self.random_str, expires=expires_time) dEF __getitem__ (Self, key): result = R.hget (self.random_str,key) If result:ret_str = str (result, encoding= ' utf-8 ') Try:result = Json.loads (ret_str) Except:result = R ET_STR return result Else:return result def __setitem__ (self, Key, value): if Type (value) = = Dict:r.hset (self.random_str, Key, Json.dumps (value)) Else:r.hset (self.random_str , key, value) def __delitem__ (self, Key): R.hdel (Self.random_str,key)

Normal session vs Memcachedsession vs Redissession