List/Grid Tag Archives: Concurrency

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Ahoy There Callbacks!

Because it’s my bag, I like JavaScript. In fact, I’ve grown to love JavaScritp’s asynchronous callback oriented style of programming. Consequently, when I find myself in a non-JavaScript ...
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Fine-Grained Concurrency with the Guava Striped Class

This post is going to cover how to use the Striped class from Guava to achieve finer-grained concurrency. The ConcurrentHashMap uses a striped locked approach to increase concurrency ...
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Scalable Counters For Multi Core

Counters are required everywhere , for e.g. to find key KPI of application, load on application, total number of request served, some KPI for finding throughput of application & ...
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Simple and lightweight pool implementation

Object pools are containers which contain a specified amount of objects. When an object is taken from the pool, it is not available in the pool until it is put back. Objects in the ...
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5 Things You Didn’t Know About Synchronization in Java and Scala

Practically all server applications require some sort of synchronization between multiple threads. Most of the synchronization work is done for us at the framework level, such as by ...
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Java FutureTask Example Program

Sometime back I wrote a post about Java Callable Future interfaces that we can use to get the concurrent processing benefits of threads as well as they are capable of returning value ...
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Lock Less Java Object Pool

It has been a while since I wrote anything, I have been busy with my new job that involves doing some interesting work on performance tuning. One of the challenges is to reduce object ...
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Invoking Async method call using Future object in Spring

The next example will demonstrate an async method call inside the Spring container. Why do we need async method calls? In some cases we don’t really know if replay is expected or ...
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Experiment with ConcurrentHashmap

I am investigating a memory issue in one of my recent projects where data is kept in memory for fast access, but the memory footprint of application is very high. This application was heavily using ...
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Five advanced Java Synchronizers you probably don’t know

Besides the common synchronize which is based in the lock bit that every Java object has, you have more sophisticated synchronizers in java, such as:Semaphore – Use the concept ...
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