List/Grid Tag Archives: Concurrency

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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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Concurrency – Sequential and Raw Thread

I worked on a project a while back, where the report flow was along these lines:User would request for a report The report request would be translated into smaller ...
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Concurrency – Executors and Spring Integration

Thread Pool/Executors Based Implementation A better approach than the raw thread version, is a Thread pool based one, where an appropriate thread pool size is defined based on the system ...
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Java concurrency – Feedback from tasks

Picking up from where I left off in my last post about the java.util.concurrent package, it’s interesting and sometimes mandatory to get feedback from concurrent tasks after they ...
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Java Thread deadlock – Case Study

This article will describe the complete root cause analysis of a recent Java deadlock problem observed from a Weblogic 11g production system running on the IBM JVM 1.6. This case ...
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Latency, Throughput and Degree of Concurrency

chrisapotek asked. How do you define throughput and latency for your test? There is not a simple question, so I have replied with a post. Sustained Throughput I consider throughput ...
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Threading stories: ThreadLocal in web applications

This week I spend reasonable time to eliminate all our ThreadLocal variables in our web applications. The reason was that they created classloader leaks and we coudn’t undeploy ...
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