, 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 summary and difficulties : Baidu Network disk dow
On the Internet to see the blog when inadvertently found that there is a Java concurrent tutorial is also good, there are more than 20 speak concurrent, a day translation 1 does not seem too difficult. Let ' s go!Original address: http://tutorials.jenkov.com/java-concurrency/index.htmlHere is the table of contents:
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 optimization2-3 Java memory model2-4 advantages and risks o
Java is a multithreaded programming language, and we can use Java to develop multithreaded programs. A multithreaded program contains two or more parts that can run concurrently, each of which can handle different tasks at the same time, making better use of available resources, especially if your computer has multiple CPUs. Multithreading enables you to write multiple activities that can be manipulated sim
1th Course Introduction and construction of Project framework 1-1 Java High concurrency Mall Second kill optimization Guide 1-2 Project Environment Building (ECLIPSE) 1-3 Project Environment Building (IDEA) 1-4 integrated mybatis 1-5 installing Redis 1-6 integrated Redis on 1-7 integrated Redis under 1-8 integrated Redis 2nd Chapter Implementation of user login and distributed session function 2-1
Course ObjectivesProficiency in high concurrency architecture Tomcat Server performance optimization.Applicable peopleFriends interested in computer, Java Developer, Java Architect, OPS!Course IntroductionTomcat is a core project of the Apache Software Foundation (Apache Software Foundation) Jakarta Project, developed by Apache, Sun, and other companies and indiv
Analysis system bottleneck point and the occurrence of crash.5th page level high concurrent kill optimization (Redis cache + static separation)Use Redis for page caching and cache kill list and details, object cache, commodity details page and seconds kill, product details static, seconds kill static resource optimization (to achieve front-end separation), CDN and DNS optimization, etc.6th. Service level high concurrent kill optimization (rabbitmq+ interface Optimization)RABBITMQ installation a
[JAVA concurrency] synchronization tool and java concurrency Tool
Synchronization tools include locking (such as CountDownLatch), barrier (such as CyclicBarrier), semaphores (such as Semaphore), and blocking queues (such as LinkedBlockingQueue;
The synchronization tool class can be used to coordinate the thread control
Jakob Jenkov Translator: Simon-sz proofreading: Fang FeiHttp://tutorials.jenkov.com/java-concurrency/index.htmlIn the past single-CPU era, single-tasking can only execute a single program at a point in time. Later in the multitasking phase, computers can perform multitasking or multiple processes in parallel at the same point in time. Although it is not really the "same point in time", but multiple tasks or
Java concurrency and synchronization, Java concurrency Synchronization
In Java, the form of concurrency is nothing more than multi-thread and multi-process. Both forms can use multiple cores to exert computing power.
Java concurrency basics and java concurrency Basics
Concurrency is the ability to run multiple programs in parallel or run multiple parts of a program in parallel. If a time-consuming task in a program can be run asynchronously or in parallel, the throughput and interactivit
JVM-concurrency-Java memory model, jvm-concurrency-java modelJava Memory Model
(1). Master memory and working memory
The Java Memory Model specifies that all variables are stored in the primary memory.
Copies of the primary memory of each type of thread variables. All operat
Java multi-thread concurrency management and java multi-thread concurrency
A good method is shown in the book. When multiple threads are concurrent, scheduleAtFixedRate can be used for management. scheduleAtFixedRate regularly executes one task, which is a repeated execution, while ScheduledThreadPoolExecutor
Java concurrency framework-fairness and java concurrency frameworkThe so-called fairness means that all threads have the same success rate for applying for access to critical resources, so that some threads do not have priority. Through the previous CLH Node FIFO learning, I learned that the waiting queue is a first-in
Java concurrency BASICS (I) -- Thread, java concurrency basics thread
Concurrent Programming allows us to divide programs into multiple separate and independent tasks. With the multi-thread mechanism, these independent tasks will be driven by the execution thread. When a thread is used, the CPU will take turns to alloc
The following information is transferred from http://tutorials.jenkov.com/java-concurrency/concurrency-vs-parallelism.html (using Google Translate):Terminology concurrency and parallelism are commonly used in multithreaded programs. But what exactly does concurrency and para
Concurrency tool classes
This series of articles mainly on Java concurrency related content, including synchronization, lock, semaphore, blocking queue, thread pool, etc., the overall mind map as follows:
Series of articles list:
Java Concurrency Foundation-
First, the key problem in concurrency and its solutionKey issues in Concurrency:1. How threads communicate--how information is exchanged between threads2. How threads are synchronized-control the relative execution order of threadsTwo ways to solve the problem:1. Implicit communication, display synchronization----the implicit communication between threads through a common state in shared memory, you must di
Need to support polling, timed locks. A lock is required for an interruptible lock fetch operation. You want to use a lock in a non-block structure. Learn about an explicit lock that supports more advanced operations.
Java 5.0 New
Reentrantlock is not an alternative to built-in locking, but an optional advanced feature when the built-in locking mechanism does not apply. 13.1 Lock and Reentrantlock
The Reentrantlock implements the lock interface, provi
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