brian layman

If Countdownlatch is a one-off, then cyclicbarrier just can be recycled. It allows a group of threads to wait for each other until a common barrier point (common barrier points) is reached. The so-called barrier point is the time when a set of tasks

This section is mainly about the implementation of read-write locks.As mentioned in the previous section, Readwritelock appears to have two locks: readlock/writelock. If it's really two locks, how do they affect each other?In fact, the realization

Objective:This note is a sequel to the SpringMVC-1 , which mainly introduces the practical application of SPRINGMVC, including the SPRINGMVC data formatting , the use of JSR 303 authentication standards in SPRINGMV The checksum of data in C

Theory JVM Virtual Memory Distribution:The program counter is the pipeline of the JVM execution program and holds some jump instructions.The local method stack is the stack used by the JVM to invoke the operating system method.The virtual

The underlying operating system, asynchronous through the signal volume, message and other ways have a wide range of applications.The PHP language runs from beginning to end in a synchronous blocking fashion, which facilitates programmers to write

JavaScript is very friendly to string processing, whether it is a wide-byte or single-byte string, and is considered a string. Node needs to deal with network protocols, manipulate databases, process pictures, file uploads, and so on, and also deal

Ext.: http://www.blogjava.net/xylz/archive/2010/07/02/325079.htmlIn this section, we begin to discuss array atomic operations and some other atomic operations.Atomicintegerarray/atomiclongarray/atomicreferencearray 's API is similar, select a

Ext.: http://www.blogjava.net/xylz/archive/2010/07/01/324988.htmlStart with a relatively simple atomic (Java.util.concurrent is a queue-based contract and the queue, in many cases, uses the atomic operation, so begin here first). In many cases we

There are very few courses on Java performance Tuning, so a comprehensive and in-depth introduction to Java performance Tuning, North wind is exclusive, special lecturer, more than 10 years of Java development work experience, Senior software

Performance and ScalabilityOne way to use threading is to improve performance. Multithreading can make the program take full advantage of idle resources, improve resource utilization, and be able to process tasks in parallel and improve the

Mainly talk about the performance of the lock and some other theoretical knowledge, the main source of the content is "Java Concurrency in Practice", combined with their own understanding and practical application of the lock mechanism to a small

Semaphore is a count semaphore. Conceptually, semaphores maintain a set of licenses. If necessary, each one is blocked before the license is available acquire() , and then the license is acquired. Each release() add a license, which may release a

Concurrentlinkedqueue is a thread-safe implementation of the queue. Let's start with a document description. A node-based, link-free, thread-safe queue. This queue sorts the elements according to the FIFO (first-in, in-out) principle. The

Long time no blog, after a 11 vacation has become lazy, and today is finally the state of recovery. OK, let's get to the point, today I'll talk about the closure in JavaScript! This blog mainly talk about some practical things, mainly the closure of

What are the benefits of understanding the garbage collection mechanism (GC) for Java developers? The first thing you can do is to satisfy your curiosity as a software engineer, and second, to learn more about how GC works can help you write better

At the end of last year, there was a Guice research project, but, unfortunately, the work "busy" coupled with the lack of practical work resulted in "nothing", and eventually only completed Guice's initial learning tutorial, and the in-depth study

This is a complete Java concurrency collation note, which records some of my experiences and experiences in recent years of learning Java concurrency. J.U.C Overall understanding Atomic Operation Part 1 starting from Atomicinteger Atomic

What is the stack area and the pre execution process for which there are no freed resources, explained in one of the most common examples: For example, now we have a UL, there are a lot of Li, need to traverse them for them to bind the Click event,

Preface This article does not have too many webwork the actual combat code details. I very much hope to be a tour guide role, leading the reader to gradually visit the WebWork features and principles. In the first chapter, we will present the 10

Directory: Initial Hive Hive Installation and Configuration Hive built-in operator and function development Hive JDBC Hive parameters Hive Advanced Programming Hive QL Hive Shell Basic Operations Hive optimization Hive Architecture The principle of