fences producer

The classic producer consumer problem simulation. This program simulates the simplest case-single buffering. In order to simulate the actual situation, the consume item and the produce item were added with the delay, and the different generation consumption rate could be simulated by modifying the delay. [Code] [/co/*** Single buffer consumer-producer problem.* by Xu (xusiwei1236@163.com).* */public class

Copy Code code as follows: Package condition; Import java.util.ArrayList;Import java.util.List;Import java.util.concurrent.locks.Condition;Import Java.util.concurrent.locks.Lock;Import Java.util.concurrent.locks.ReentrantLock; /*** Using lock and condition to realize producer consumer model* @author would**/public class Producerconsumerdemo {public static void Main (string[] args) {int producercount = 10;int consumercount = 15;Final Produce

Tags: User ase mode Cache code log SHM nbsp inf1.1 RequirementsDatabase 3 million user data, traverse get all users, various combinations associated, get to a new JSON, save to Redis.1.2 DifficultiesDatabase is much more, it is impossible to single-threaded query all the data to memory.1.3 SolutionsMulti-threaded reading, the producer gets 200 data each time, the consumer goes to consume. (This is mainly based on MySQL paging to get the next 200 data)

Producer and consumer mode 1. QueueAdvanced First Out2. StackAdvanced Post-outA synchronized, thread-safe queue class is provided in the Python queue module, including FIFO (first-in, first-out) queue Queue,lifo (back-in-first-out) queue Lifoqueue, and priority queue priorityqueue. These queues implement the lock primitives (which can be understood as atomic operations, i.e. either not done or done) and can be used directly in multiple threads. Queues

Before I felt very simple, but one interview let me write on the paper, actually did not write to disgrace ah.Producer consumer problem (Producer-consumer problem): Producers constantly produce products, consumers take away the products produced by producers. The producer produces the product and puts it into an area where consumers remove data from it.The problem: to ensure that producers do not add data w

Producer-consumption patterns, which typically have two types of threads, that is, several producer threads and several consumer threads. Producer threads are responsible for submitting user requests, and consumer threads are responsible for dealing specifically with the tasks submitted by the producer. The two communi

/*Multithreading: a producer a consumer*/Class Resource{private String name;private int age;Boolean flag=false;Public synchronized void Setresource (String name,int count) throws Interruptedexception{while (flag)This.wait ();{this.wait (); this.notify (); System.out.println ("producer while Continue");}This.name=name+count;System.out.println ("producer" +this.nam

producersImport java.util.Properties;Import Kafka.javaapi.producer.Producer;Import Kafka.producer.KeyedMessage;Import Kafka.producer.ProducerConfig;Import Kafka.serializer.StringEncoder;public class Kafkaproducer extends thread{Private String topic;Construction methodPublic kafkaproducer (String topic) {this.topic = topic;}@Overridepublic void Run () {Producerfor (int i =1; iString message = "message" +I;Producer.send (New KeyedmessageSystem.out.println ("pr