Hello everyone. This is Vladislav Rodin speaking. I currently teach courses on software architecture and high-load software architecture on the OTUS portal. In anticipation of the new course 'High Load Architect' starting soon, I decided to write a short original piece that I would like to share with you. Introduction Due to the fact that HDDs can only perform about 400-700 […]
The release of Zorin OS 15.2, based on the Ubuntu 18.04.4 package base, has been announced. The target audience for the distribution is beginner users accustomed to working in Windows. To manage the appearance, the distribution offers a special configurator that allows users to give the desktop the look typical of various Windows versions, and it includes a selection of programs similar to those familiar to Windows users. The size of the bootable ISO image […]
A significant release of the in-memory caching data system Memcached 1.6.0 has occurred, operating with key/value format data and known for its ease of use. Memcached is typically used as a lightweight solution to speed up high-load websites by caching access to databases and intermediate data. The code is distributed under the BSD license. In the new version, the implementation of the "extstore" storage has been stabilized, which can now be assembled […]
On March 8, the US6711293B1 patent expired, describing the SIFT (Scale Invariant Feature Transform) technique designed for detecting features in images. SIFT is applicable in areas such as object recognition in images, overlaying 3D models on real images in augmented reality systems, map matching, 3D space location determination, and panorama stitching. Previously, to use SIFT in […]
The release of Pygments 2.6.1 has occurred. Pygments is a library for Python and a command-line utility for syntax highlighting of source code. It is used by various platforms such as Wikipedia, BitBucket, and Progopedia. It outputs the following formats: HTML, LaTeX, RTF, and syntax highlighting through ANSI sequences (in the console). In the new version (changes for version 2.6 are indicated; version 2.6.1 fixes packaging issues): Support for Python 2 has been removed. […]
Standard condition for implementing CI/CD in Kubernetes: the application must be able to stop accepting new client requests before full shutdown and, most importantly, successfully finish existing requests. Meeting this condition allows for zero downtime during deployment. However, even with very popular stacks (like NGINX and PHP-FPM), you can encounter challenges that lead to spikes […]
The previous parts of the "Introduction to SSD" series informed the reader about the history of SSD drives, the interfaces for interacting with them, and popular form factors. The fourth part will discuss data storage within the drives. In previous articles of the series: The History of HDD and SSD Creation The Emergence of Storage Interfaces Features of Form Factors Data storage in solid-state drives can be divided into two logical parts: information storage in […]
I invite you to review the transcript of Igor Strycharz's 2017 presentation "ClickHouse – visually fast and clear data analysis in Tabix." The web interface for ClickHouse in the Tabix project. Main features: Works with ClickHouse directly from the browser, without the need for additional software installation; Query editor with syntax highlighting; Command auto-completion; Tools for graphical analysis of query execution; Color schemes to choose from. I […]
The infamous update KB4535996, released in February, has brought new issues. This time, users are reporting spontaneous waking of computers from sleep mode. Users claim that the problem occurs on the Surface Laptop 2 and some other laptops, as well as PCs, even when the lid is closed. In various cases, wake-ups are reported after several minutes or hours. Owners […]
Almost a year after the first stable release, the second major version of Pleroma — a federated social network for microblogging written in Elixir and utilizing the standardized W3C ActivityPub protocol — has been presented on International Women's Day. It is the second largest network in the Fediverse. Unlike its closest competitor, Mastodon, which is written in Ruby and relies on […]
The Administrative Budget Management of the U.S. President's Office has requested comments on the new guidelines for transitioning to IPv6 in U.S. government institutions. The new version of the guidelines notes that support for dual-stack creates additional operational complexities and recommends that the internal networks of government organizations transition to IPv6-only instead of dual stack. Of course, public services should maintain IPv4 addresses during the transition. The guidelines also require, […]
The release of the APT 2.0 (Advanced Package Tool) package management toolkit developed by the Debian project has been prepared. In addition to Debian and its derivatives, APT is also used in some distributions based on the RPM package manager, such as PCLinuxOS and ALT Linux. The new branch incorporates changes accumulated during the development of the experimental 1.9.x branch. The new release is expected soon […]