Introduction to Concurrency Models with Ruby. Part II
In the second part of our series we will take a look at more advanced concurrency models such as Actors, Communicating Sequential Processes, Software Transactional Memory and of course Guilds — a new concurrency model which may be implemented in Ruby 3. If you haven’t read our first post in the series, I’d definitely recommend reading it first. There I described Processes, Threads, GIL, EventMachi
Introduction to Concurrency Models with Ruby. Part I
In this first post, I would like to describe the differences between Processes, Threads, what the GIL is, EventMachine and Fibers in Ruby. When to use which of the models, which open-source projects use them, what the pros and cons are. What is concurrency?ProcessesRunning multiple processes is not actually about concurrency, it’s about parallelism. Although parallelism and concurrency are often c
Batching – A powerful way to solve N+1 queries every Rubyist should know
In this post, I’m going to tell you about batching as a technique to help avoid N+1 queries, existing battle-tested tools like Haskell Haxl and JavaScript DataLoader, and how similar approaches can be used in any Ruby program. Here is a translated Japanese version of the blog post. What are N+1 queries?First, let’s find out what N+1 queries are and why they are called that. Imagine, we have 2 SQL
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