Blog Section
These days, everyone has written about blockchain technology, cryptocurrencies, and how cool they are. However, this article will not extol the virtues of this technology; it will focus on its drawbacks and ways to address them. While working on one of the projects at Altirix Systems, the task of providing secure, censorship-resistant data verification from external sources for blockchain arose […].
The release of the Zorin OS 15.3 Linux distribution has been announced, based on the Ubuntu 18.04.5 package base. The target audience for the distribution is beginner users accustomed to working in Windows. To customize the appearance, the distribution offers a special configurator that allows the desktop to resemble different versions of Windows, and it includes a selection of applications similar to those familiar to Windows users. The size of the bootable iso image […]
In episode 122 of the SDCast podcast (mp3, 71 MB, ogg, 52 MB), there was an interview with Georgy Melikov, a contributor to the OpenZFS and ZFS on Linux projects. The podcast discusses how the ZFS file system is structured, its features and differences from other file systems, what components it consists of, and how it operates. Source: opennet.ru
Stabilized release 3.0 of the Portage package manager for the Gentoo distribution. New features: Support for Python 2.7 has been removed. Now only version 3.2 and higher is supported. Calculations have been significantly accelerated due to optimizations and caching results of the catpkgsplit and use_reduce functions. Reports indicate approximately 50-60% gains when building the "world". Source: linux.org.ru
Hello, Habr! Today we present to your attention a translation of a complex article on implementing distributed locks using Redis and discuss the prospects of Redis as a topic. The analysis of the Redlock algorithm by Martin Kleppmann, author of the book 'Designing Data-Intensive Applications', is provided here. Distributed locks are a very useful primitive used in many environments where different processes need to work on shared resources […]
Greetings to the readers of our blog! We are already somewhat familiar – my English posts have appeared here translated by my dear colleague polarowl. This time, I decided to reach out directly to the Russian-speaking audience. For my debut, I wanted to find a topic interesting to as wide an audience as possible, requiring detailed consideration. Daniel Defoe claimed that everyone is faced with death and taxes. […]
This is the third article in the series 'Writing a Telegram Bot in R'. In the previous publications, we learned to create a Telegram bot, send messages through it, and added commands and message filters to the bot. Therefore, before proceeding to read this article, I highly recommend familiarizing yourself with the previous ones, as I will not be stopping to explain previously covered basics […]
On the eve of Knowledge Day, NII SOKB held an open house at its data center SafeDC for customers, who saw firsthand what we will discuss next under the cut. The SafeDC data center is located in Moscow on Scientific Avenue, on the underground floor of a business center at a depth of ten meters. The total area of the data center is 450 sq.m, with a capacity of 60 racks. Power supply is organized […]
Google has released the open mobile platform Android 11. The source codes associated with the new release are available in the project's Git repository (branch android-11.0.0_r1). Firmware updates have been prepared for Pixel series devices, as well as for smartphones manufactured by OnePlus, Xiaomi, OPPO, and Realme. Universal GSI (Generic System Images) builds have also been created, suitable for various devices based on ARM64 architectures and […]
Some applications also need to store data, but they are quite calm about the fact that the data will not be saved after a restart. For example, caching services are limited in memory but can also move data that is seldom used to storage that operates slower than RAM, with minimal impact on overall performance. Other applications need to know that in […]
A couple of lines of code and your application generates metrics, wow! To understand how prometheus_flask_exporter works, a minimal example is enough: from flask import Flask from prometheus_flask_exporter import PrometheusMetrics app = Flask(__name__) metrics = PrometheusMetrics(app) @app.route('/') def main(): return 'OK' That’s all you need to get started! By adding the import and the line to initialize PrometheusMetrics, you'll get metrics […]
In this article, I want to share my experience with NJS, a JavaScript interpreter for Nginx developed by Nginx Inc, describing its main capabilities through a real example. NJS is a subset of the JavaScript programming language that allows for extending the functionality of Nginx. To the question of why have your own interpreter??? Dmitry Volyntsev has answered in detail. In short: NJS is the nginx-way, and JavaScript is more progressive, 'native' and […]