Ruby

Inside Kafka: Enhancing Data Reliability Through Transactional Offsets with Karafka

Leave a Comment / apache kafka, Karafka, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / June 22, 2023

Karafka is a Ruby and Rails framework that simplifies the development of Apache Kafka-based applications. Among its varied features, the Filtering API provides enhanced control over the data flow. The crux of this article is about managing offsets – unique identifiers for messages within Kafka’s partitions. Often, there’s a need to manage offsets alongside database …

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Karafka framework 2.1 announcement

Leave a Comment / Karafka, karafka framework, kubernetes, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / June 2, 2023

I’m happy to announce that Karafka 2.1 has just been released. For those who wonder what Karafka is, Karafka is a Ruby and Rails multi-threaded efficient Kafka processing framework. The Karafka 2.1 release builds upon the foundation set by its predecessor, 2.0, making it a seamless continuation rather than a major rewrite. This means that …

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Delaying Kafka Messages Processing with Karafka: A Deep Dive into Delayed Topics

Leave a Comment / kafka, Karafka, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / April 16, 2023

Kafka is a popular distributed streaming platform that is commonly used for building real-time data pipelines and streaming applications. One of the core features of Kafka is its ability to handle high-volume, real-time data streams and reliably process and distribute them to multiple consumers. However, in some cases, it may be necessary to postpone the …

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Kafka topics as code – declarative Kafka topics management in Ruby

Leave a Comment / apache kafka, kafka, Karafka, karafka framework, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / March 15, 2023

Kafka topics are a fundamental concept in Apache Kafka. Topics are logical names or labels representing a stream of messages that Kafka clients can produce and consume. What makes them interesting is the variety of settings that can be applied to them. These settings, amongst others include: Partition count: The number of partitions that a …

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Karafka Web UI – Your Ruby and Rails out-of-the-box Kafka UI

Leave a Comment / apache kafka, kafka, Karafka, karafka framework, Rails, Ruby, Software, Ubuntu, Ubuntu Feed, waterdrop / By Ubuntu Server Admin / February 15, 2023

I’m thrilled to announce the new and shiny addition to the Karafka ecosystem: Karafka Web. For those who wonder what Karafka is, Karafka is a Ruby and Rails multi-threaded efficient Kafka processing framework. Karafka has always been a convenient framework, and I’ve abstracted or hidden many complexities related to working with Apache Kafka. However, the …

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Ruby concurrency is hard: how I became a Ruby on Rails contributor

Leave a Comment / bug, concurrency, concurrent-ruby, Education, Karafka, mutex, parallel, Rails, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / November 23, 2022

For the past several weeks, I’ve been trying to fix a cranky spec in Karafka integrations suite, which in the end, lead me to become a Ruby on Rails micro-contributor and submitting similar fix to several other high-popularity projects from the Ruby ecosystem. Here’s my story of trying to make sense of my specs and …

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RSpec story about disappearing classes

Leave a Comment / GC, Rails, RSpec, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / November 13, 2022

ActiveSupport#descendants can be slow. In a bigger system with layers of descendants, finding all of them can be time-consuming: puts Benchmark.measure do 100.times { Dispatchers::Base.descendants } end # 5.235370 0.015754 5.251124 ( 5.251069) In the code I’ve been working on, it meant that a single lookup was taking around 50ms. That is a lot, especially …

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Karafka framework 2.0 announcement

Leave a Comment / apache kafka, kafka, Karafka, karafka framework, Rails, Ruby, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / August 9, 2022

I’m thrilled to announce the new and shiny Karafka 2.0. It is an effect of my work of almost four years. For those who wonder what Karafka is, Karafka is a Ruby and Rails multi-threaded efficient Kafka processing framework. Karafka 2.0 is a major rewrite that brings many new things to the table but removes …

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Reduce your method calls by 99.9% by replacing Thread#pass with Queue#pop

Leave a Comment / benchmark, Karafka, karafka framework, Performance, Ruby, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / January 20, 2022

When doing multi-threaded work in Ruby, there are a couple of ways to control the execution flow within a given thread. In this article, I will be looking at Thread#pass and Queue#pop and how understanding each of them can help you drastically optimize your applications. Thread#pass – what it is and how does it work …

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Controlling Elgato Key Light under Ubuntu with Ruby

Leave a Comment / elgato, Hardware, Ruby, Snippets, Software, Ubuntu, Ubuntu Feed / By Ubuntu Server Admin / December 29, 2021

Recently I’ve acquired Elgato Key Light. It is a WiFi controllable LED lighting panel. The panel uses 160 LEDs to provide up to 2800 lumens of brightness and a color range of 2900-7000K. While you can control it from a mobile device, doing it directly from the shell makes the whole experience way more convenient. …

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