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Composable concurrency scope of ZIO Semaphore


I was recently working on a "Durable Key-Value Store" implementation in ZIO. The implementation was pretty straightforward, but I had to make sure that the log file is not accessed concurrently by multiple fibers. I could have used a Ref to keep track of the state, but I came across Semaphore in ZIO and decided to give it a try. I was pleasantly surprised by how easy it was to use. In this post, we will take a look at how to use Semaphore to implement concurrency control in ZIO.

Actors using Scala & Akka — Part 1 : Introduction


Since I am stuck at home due to Covid-19 pandemic. With nothing else to do, I thought the best use of time would be to continue my blog series about actors. In the last article, we saw what are actors, their properties and how these properties can be useful for writing concurrent and stateful applications. It was all theory. In this article, I will demonstrate how to write your first akka actor in scala using IntelliJ IDE. Hop on even if you don’t know scala.

Concurrency with Actors


The actor model of computing was introduced by Carl Hewitt in 1973. This model makes it easy to tackle the problem of concurrency and state management. The model treats an “actor” as a primitive unit of computing.