List/Grid Tag Archives: Concurrency

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Locking with a semaphore : An example

Concurrency is one aspect that brings along interesting challenges along with it. If not correctly handled, it brings about race conditions that will baffle people because those issues ...
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A Lazy Developers Introduction to Java Concurrency Executors

I would make a fool out of myself if I tell you that util.concurrent APIs kicks cheetah’s ass when the classes are available since 2004. However, there are some cool features which ...
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Log4j Thread Deadlock – A Case Study

This case study describes the complete root cause analysis and resolution of an Apache Log4j thread race problem affecting a Weblogic Portal 10.0 production environment. It will also ...
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Does Immutability really means Thread Safety?

I have often read articles telling “If an object is immutable, it is thread safe”. Actually, I have never found an article that convinces me that immutable means thread safety. ...
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A Generic and Concurrent Object Pool

In this post we will take a look at how we can create an object pool in Java. In recent years, the performance of the JVM has multiplied manifold that object pooling for better performance ...
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Project Lambda: To Multicore and Beyond

The presentation “Project Lambda: To Multicore and Beyond” (Session 27400 and not to be confused with Brian Goetz’s presentation of the same name) was given in the ...
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What makes parallel programming hard?

Multi-cores are here, and they are here to stay. Industry trends show that each individual core is likely to become smaller and slower (see my post to understand the reason). Improving ...
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Java Executor Service Types

ExecutorService feature was come with Java 5. It extends Executor interface and provides thread pool feature to execute asynchronous short tasks. There are five ways to execute ...
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Java Concurrency – CyclicBarrier Example

CyclicBarrier in Java is a synchronizer introduced in JDK 5 on java.util.Concurrent package along with other concurrent utility like Counting ...
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Native vs Green threads

Native vs Green threads  Understanding a multi-threaded program have always been a wild goose chase for many programmers. There are always many aspects to consider when writing ...
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