Python thread and Redis Simple read-write operation application __python

Python thread and Redis Simple read-write operation Application 1. Python Threads & thread pool Concepts Python uses threads in two ways: functions or wrapping thread object functions with classes: Tuning H generates new threads with the Start_new_thread () function in the thread module, THREAD.START_NEW_THR EAD (Function,args[,kwargs]) parameter description: function---> Thread function args > passed to the thread function, the parameter must be tuple type Kwargs---> Optional parameter class method: using T The Hreading module creates the thread directly from the threading.  Thread inheritance, and then rewrite the __init__ method and the Run method and run below give a simple implementation of the two methods codes, which may be more complex to use on the project #!/usr/bin/python #-*-coding:utf-8-*-Import
		Thread import time #define a function to Thread def print_time (ThreadName, delay): Count = 0 While count < 5: Time.sleep (delay) Count +=1 print ("%s:%s"% (Threadname,time.ctime (Time.time ())) # define 2 thread Try:threa D.start_new_thread (Print_time, ("Thread-1", 2,)) Thread.start_new_thread (Print_time, ("Thread-2", 4,)) Except:print ( ' Error:unable to start thread ') while 1:pass #============================================== #!/usr/bin/py Thon #-*-coding:utf-8-*-import Threading Import Time Exitflag = 0 Class Mythread (THREading,thread): # inherits the parent class threading. Thread def __init__ (self, Threadid,name, counter): Threading. Thread.__init__ (self) self.threadid=threadid self.name= name self.counter = Counter def run (self): # write code to execute to The run function inside the thread runs the Run function print directly ("starting" + Self.name) print_time (self.name, self.counter,5) print ("Exiting" +se Lf.name def print_time (Threadname,delay, counter): While Counter:if exitflag:threading. Thread.exit () time.sleep (delay) print ("%s:%s"% (Threadname,time.ctime (Time.time ())) counter-=1 #create new T Hread thread1 = mythread (1, "Thread-1", 1) thread2 = Mythread (2, "Thread-2", 2) Thread1.start () Thread2.start () print ("Exit ing Main thread ") #==========================================# more in-depth content, requires lookup network (thread sync, thread priority queue) python install redis pip i Nstall redis redis boot redis-server.exe redis.conf C:\Users\IBM_ADMIN\Downloads\redis-2.4.5-win32-win64\64bit python Connection Redis r = Redis. Redis (host= ' 127.0.0.1 ', port=6379,db=0) R.set ('World ', ' hello ') ture r.get ("World") # Statistics the number of users in read time import/from Redis import Redis F
    ROM datetime import datetime online_last_minutes = 5 Reids = Redis () p = reids.pipeline () def make_online (user_id): now = Int (Time.time ()) expires = Now + online_last_minutes * + all_users_key = ' online-users/%d '% (now//6 0) User_key = ' user-activity/%s '% user_id print (All_users_key, User_key) p.sadd (all_users_key,user_id) p . Set (User_key,now) p.expireat (all_users_key,expires) p.expireat (user_key,expires) print (P.get (user_key)) p Rint (P.get (All_users_key)) print (P.get (user_key)) #print (expires) make_online (' Me ') make_online (' You ') #p. exe Cute () For more information please refer to network RSHR2. The purpose of CUST_DIMNSN Cgns_02.user_cust_list_expldd CGNS_02.USER_CUST_LIST_HDR Runstat is to collect the latest statistics to facilitate the optimizer to choose the most appropriate access path HTTP://R










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