Category: Blog

Remote work or freelancing in remote areas. Communication aspects. Part 2. There is connectivity.

In the previous article, I discussed the topic of 'country' internet and devices for accessing this internet. However, not everyone has a cell tower within visible range, and a cellular operator's modem dongle can be utterly useless. This is where specialized routers, boosters, and directional antennas come into play. In this article, I will explain how to achieve a level of comfort […]

Internet for summer cottage owners. Achieving maximum speed on 4G networks. Part 1. Choosing the right router.

Several years ago, I reviewed communication tools for summer cottage owners or those living in their houses where broadband internet access is unavailable or costs so much that it’s easier to move to the city. Since then, a lot of terabytes have been transferred, and I became curious about what is currently available on the market for good access to the internet via LTE […]

Release Electron 5.0.0, an application development platform based on the Chromium engine

The release of the Electron platform 5.0.0 has been prepared, providing a self-sufficient framework for developing cross-platform user applications based on components of Chromium, V8, and Node.js. The significant change in version number is due to the update to the Chromium 73 codebase, Node.js 12 platform, and V8 7.3 JavaScript engine. The previously expected discontinuation of support for 32-bit Linux systems has been postponed, and the 5.0 release in […]

Performance monitoring of PostgreSQL queries. Part 1 — Reporting

Engineer — translated from Latin — means inspired. An engineer can do anything. (c) R.Diesel. Epigraphs. Or the story of why a database administrator should remember their programming past. Preface All names have been changed. Any resemblance is coincidental. This material represents solely the author's personal opinion. Disclaimer of warranties: the planned series of articles will not contain detailed and precise descriptions of the tables used […]

Xiaomi Mi ART TV: 65-inch picture frame TV with a thickness of 13.9 mm

Xiaomi has introduced the first television in the new ART TV series (or Mural TV): a 65-inch 4K panel made with a Samsung display. The TV is only 13.9 mm thick. Thanks to its flat back, the panel can be pressed flush against the wall, mimicking a painting. In standby mode, the Mi ART TV can display artworks from 45 authors in 22 […]

Random oracle based on digital signature in blockchain

From Idea to Implementation: Modifying the existing digital signature scheme based on elliptic curves to make it deterministic, and providing on its basis functions for obtaining verifiable pseudorandom numbers within the blockchain. Idea In the autumn of 2018, the first smart contracts were activated on the Waves blockchain, immediately raising the question of the possibility of obtaining trustworthy pseudorandom numbers. Pondering this issue, […]

Everything in-house: the first SSD controller based on the Chinese Godson architecture has been unveiled

For China, mass production of SSD controllers is as crucial as establishing domestic production of NAND flash memory and DRAM. Limited production of 32-layer 3D NAND and DDR4 chips has already begun in the country. But what is the situation with controllers? According to EXPreview, about ten companies in China are developing SSD controllers. All of them utilize that or […]

Release of OpenBSD 6.5

The release of the free, cross-platform UNIX-like operating system OpenBSD 6.5 has come to light. The OpenBSD project was founded by Theo de Raadt in 1995 after a conflict with developers of NetBSD, which resulted in Theo being denied access to the NetBSD CVS repository. After that, Theo de Raadt and a group of like-minded individuals created a fork based on the NetBSD source code tree […]

Steal: Who is stealing CPU time from virtual machines?

Hello! I want to explain in simple terms how steal arises within virtual machines and some of the not-so-obvious artifacts we discovered during our investigation, which I delved into as the tech director of Mail.ru Cloud Solutions. The platform operates on KVM. CPU steal time is the time when a virtual machine does not receive CPU resources […]

«Medium» — the first decentralized internet provider in Russia

It's hard to imagine that any of the local residents are unfamiliar with the rather controversial and already quite notorious bill regarding the 'sovereign Runet.' In this article, I would like to share with Habra readers information about an already functioning decentralized provider in Russia that allows access to resources on the I2P network, and also invite interested citizens to join the project and raise […]

The NetBeans development environment has achieved Apache top-level project status

The Apache Software Foundation has announced the awarding of primary project status to the integrated development environment NetBeans. In the fall of 2016, Oracle decided to transfer the project under the auspices of the Apache Foundation, after which it handed over 4 million lines of code and rights to all related source texts for NetBeans, as well as the 'NetBeans' trademark, the domain 'netbeans.org,' and some elements […]

How We Built Monitoring with Prometheus, Clickhouse, and ELK

My name is Anton Baderin. I work at the Center for High Technologies and specialize in system administration. A month ago, our corporate conference concluded, where we shared accumulated experiences with the IT community in our city. I talked about monitoring web applications. The material was intended for junior or middle levels, who had not built this process from scratch. The cornerstone of any monitoring system […]

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