java concurrency course

: hashing algorithm: The way of using user_id%; Range: can be divided according to the range of user_id character values, such as 1-1000 for one area, 1001-2000 for another, etc. mapping relationship: is the corresponding partition of the user_id exist in the database to save, when the user operation, first to query the partition, and then to operate.You can click to join the group: 650385180 "Java Architecture" there is the

Multithreading and concurrency issues are among the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of the basics of Java multithreading to match the problems you encounter later. ( proof Note: Very much agree with this

Java's approach to designing databases in high-concurrency high-load Web sites (Java tutorials, Java processes large amounts of data, Java High-load data) One: High-concurrency high-load web site focus on the database Yes, the first is the database, which is the first sp

Java concurrency architecture and java Architecture Concurrent Programming Thread Communication Shared Memory and message passing Thread Synchronization Control the execution sequence of different threads Java concurrency Ba

Multithreading and concurrency issues are among the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of the basics of Java multithreading to match the problems you encounter later. ( proof Note: Very much agree with this

JAVA multithreading and concurrency knowledge point summary, java Multithreading Last time I summarized a summary of JAVA object-oriented and collection knowledge points:Http://blog.csdn.net/zhoubin1992/article/details/46481759This time, I will summarize the knowledge points related to

JAVA multithreading and concurrency knowledge point summary, java Multithreading Reprinted please indicate the source: http://blog.csdn.net/zhoubin1992/article/details/46861397 Last time I summarized a summary of JAVA object-oriented and collection knowledge points:Http://blog.csdn.net/zhoubin1992/article/details/46481

 original link Connection author : Pankaj translator : Zheng Xudong proofreading : Fang FeiMultithreading and concurrency issues are among the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of the basics of Java mul

Original link: http://www.cnblogs.com/dolphin0520/p/3932934.htmlMultithreading and concurrency issues are among the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of the basics of Java multithreading to match the probl

later. By starting the calculation early, you can reduce the time that is required to wait for the result.-5.5.3 Signal VolumeThe Count Semaphore (counting semaphore) is used to control the number of simultaneous accesses to a particular resource, to implement a resource pool, or to impose boundaries on a container. Java Multithreading Series--principle and example of the semaphore semaphore of "Juc lock" 11Feel this principle is similar to the opera

Multithreading and concurrency issues are among the questions that interviewers prefer to ask in a Java technology interview. Here, the most important questions are listed from the interview point of view, but you should still have a solid grasp of the basics of Java multithreading to match the problems you encounter later.Java multithreaded interview questions1.

Previous blog "Dead java Concurrency"-in-depth analysis of the volatile implementation principle has described the characteristics of volatile: volatile visibility; For a volatile read, you can always see the final write of this variable; volatile atomicity; volatile is atomic for a single read/write (32-bit long, Double), except for composite operations, such as i++; A "memory barrier" is

Java Multithreading and Concurrency basics interview questions and AnswersOriginal link: http://ifeve.com/java-multi-threading-concurrency-interview-questions-with-answers/Multithreading and concurrency issues are among the questions that interviewers prefer to ask in a

thread safety in Java-synchronization, using atomic classes (atomic concurrent classes), implementing concurrent locks, using the volatile keyword, and using immutable classes and thread-safe classes. You can learn more in the thread safety tutorial.How does the volatile keyword work in Java?When we use the volatile keyword to modify a variable, the thread will read the variable directly and not cache it.

1th. Course Preparation1-1 Course Guidance1-2 Concurrent Programming First experience1-3 concurrency and high concurrency basic concepts2nd Chapter Concurrency Foundation2-1 CPU Multilevel Cache-cache consistency2-2 CPU Multi-level cache-Random order execution optimization2-

, List page and detail page anti-brush, seconds kill operation Anti-brush, verification code anti-brush. This chapter introduces some common schemes to prevent spiders or second-kill artifacts.8th Server Optimization (TOMCAT/NGNIX/LVS) tomcat optimization, Ngnix optimization, LVS four-layer load balancing, lvs+keepalived high-availability optimizationThe 9th chapter of the course summary and the heavy difficulties reviewA review of the curriculum summ

Transferred from: http://blog.csdn.net/zhangzeyuaaa/article/details/44542161Java's approach to designing databases in high-concurrency high-load Web sites (Java tutorials, Java processes large amounts of data, Java high-load data)One: high-concurrency high-load web site focu

-synchronization, using atomic classes (atomic concurrent classes), implementing concurrent locks, using the volatile keyword, and using immutable classes and thread-safe classes. You can learn more in the thread safety tutorial. How does the volatile keyword work in Java? When we use the volatile keyword to modify a variable, the thread will read the variable directly and not cache it. This ensures that the variables read by the thread are consistent

ThreadPoolExecutor thread execution service for Java concurrency and java multi-thread concurrent execution 1 package com. thread. test. thread; 2 3 import java. util. concurrent. executorService; 4 import java. util. concurrent. define blockingqueue; 5 import

The Java.util.concurrent package (J.U.C) after Java5 is the work of the world-class concurrent Master Doug Lea, which mainly implements The corresponding atomic class of Integer/long in atomic package is mainly based on CAS; Some of the same steps, including Lock,countdownlatch,semaphore,futuretask, are based on the Abstractqueuedsynchronizer class; About the executors class of thread execution, etc.; Some concurrent collection classes, such as Concurrenthashmap,concurrentl