concurrency

Java concurrency: Reentrant Locks

Java, Tech Blogs, , , , , , , , ,

Reading Time: 3 minutes Hello readers! Welcome to another blog in the Java concurrency series. Today, we are going to look at the Reentrant Locks in Java. What it is, how to use it, and mainly, what is the difference between using Reentrant Locks and synchronization. So, let’s dive straight into it. Reentrant Locks Reentrant locks work just like the synchronized locks in java, but have much more facilities Continue Reading

Concurrency API

Guide to Java 8 Concurrency API using Executors

Java, Scala, , , ,

Reading Time: 3 minutes Working with the Thread class in Java can be very tedious and error-prone. Due to this reason, Concurrency API was introduced back in 2004 with the release of Java 5 and then enhanced with every new Java release.The API is located in package java.util.concurrent. It contains a set of classes that make it easier to develop concurrent (multithreaded) applications in Java.  The executor services are one of the most Continue Reading

Knolx – Akka Finite State Machine

Akka, Scala, , , , , , , ,

Reading Time: < 1 minute Hi all, Knoldus has organized a 30 min session on 17th February 2017 at 4:05 PM. The topic was Akka Finite State Machine. Many people have joined and enjoyed the session. I am going to share the slides and Video here. Please let me know if you have any question related to linked slides.

Akka Persistence using MongoDB – Part I

Akka, MongoDB, NoSql, Scala, Tutorial, , , , , , , ,

Reading Time: 3 minutes Akka is a powerful actor based tool kit for Concurrency, Parallelism and Clustering. But for every concurrent applications, Akka actors are not fit because Futures are another alternative for performing Concurrency. Most of the developers follow simple rules for using Future and Actors is “Futures for Concurrency, Actors for State“. In concurrent applications most of the time we are facing race conditions and deadlocks. Because Continue Reading

Scala Future Under The Hood

Future, Scala, , , , , ,

Reading Time: 3 minutes In the previous post, i was discussing about Scala ExecutionContext. As we know, for multithreading we need to maintain thread pools using ExecutionContext and by default ForkJoinPool is used because for accessing “multi core” processor. There are multiple thread pools are available in our java.util.concurrent.Executors utility class and as per our requirement we can create new one also. After all, Scala have concept of Future. Continue Reading

Java Executor Vs Scala ExecutionContext

Scala, , , , , , ,

Reading Time: 3 minutes Java supports low-level of concurrency and some of rich api’s which is just a wrapper of low-level constructs like wait, notify, synchronize etc, But with Java concurrent packages Scala have high level concurrency frameworks for “which goal to achieve, rather than how to achieve“. These types of programming paradigms are “Asynchronous programming using Futures“, “Reactive programming using event streams“, “Actor based programming” and more. Note: Continue Reading

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