ProHoster > Articles on: Yuri Gagarin

Author: Yuri Gagarin

A technical specialist at ProHoster with over six years of experience in server administration, VPN solutions, and network security. I manage infrastructure setup and support, monitor service stability, and implement solutions to protect client data. I also contribute to performance optimization and compliance with modern security and privacy requirements.

Network-as-a-Service for large enterprises: a custom case

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How to upgrade network equipment at a large enterprise without halting production? Project manager at Linxdatacenter, Oleg Fedorov, discusses a large-scale project resembling 'open-heart surgery.' In recent years, we have noticed an increased demand from clients for services related to the networking component of IT infrastructure. The need for connectivity among IT systems, services, applications, monitoring tasks, and operational management of businesses […]

First Look: How the New Corporate Mail System Mailion from M оиОфис Works.

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Almost four years ago, we started designing a fundamentally new distributed email system, Mailion, intended for corporate communications. Our solution is built on a Cloud Native microservices architecture, capable of supporting over 1,000,000 users simultaneously, and will cater to 100% of the needs of large corporations. During the development of Mailion, the team has grown several times, and […]

Why is my NVMe slower than SSD?

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In this article, we will look at some nuances of the input-output subsystem and their impact on performance. A couple of weeks ago, I encountered the question of why NVMe on one server is slower than SATA on another. I checked the server specifications and realized it was a trick question: the NVMe was from the consumer segment, while the SSD was from the server segment. It is clear that […]

1. Training users in the basics of cybersecurity. Fighting phishing.

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Today, a network administrator or security engineer spends a lot of time and effort protecting the enterprise network perimeter from various threats, mastering new prevention and event monitoring systems, yet even this does not guarantee full security. Social engineering is actively used by attackers and can lead to serious consequences. How often have you caught yourself […]

Moving to ClickHouse: 3 years later.

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Three years ago, Viktor Tarnavskiy and Alexey Milovidov from Yandex spoke on the HighLoad++ stage about how good ClickHouse is and how it doesn’t slow down. Meanwhile, on the adjacent stage, Alexander Zaitsev presented on migrating to ClickHouse from another analytical DBMS, concluding that ClickHouse is indeed good but not particularly user-friendly. When in 2016 the company […]

New Article: Review of JBL Boombox 2 Audio System: Powerful Bass on Land and in Water

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Nearly all acoustic systems from HARMAN, produced under the JBL brand, are always distinguished by their incredibly attractive design, unique features, and, of course, high sound quality. The latter is typically aimed at a young audience that prefers electronic music genres, pop, rap, hip-hop, and other styles where bass sound is essential. Let's face it—many people love JBL for its expressive bass, […]

Final specifications for OpenCL 3.0 have been published.

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The Khronos Group, responsible for developing specifications for the OpenGL, Vulkan, and OpenCL families, has announced the release of the final specifications for OpenCL 3.0, defining the API and language C extensions for organizing cross-platform parallel computing using multi-core CPUs, GPUs, FPGAs, DSPs, and other specialized chips, from those used in supercomputers and cloud servers to chips commonly found in […]

Release of nginx 1.19.3 and njs 0.4.4

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The main branch release of nginx 1.19.3 has been formed, continuing the development of new features (only critical bug fixes and vulnerabilities are addressed in the concurrently supported stable branch 1.18). Key changes include: The addition of the ngx_stream_set_module, allowing the assignment of a variable value server { listen 12345; set $true 1; } A new directive proxy_cookie_flags has been added to specify flags for […]

Pale Moon browser release 28.14

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The release of the web browser Pale Moon 28.14 has occurred, which diverged from the Firefox codebase to ensure higher efficiency, retain the classic interface, minimize memory consumption, and provide additional customization options. Pale Moon builds are available for Windows and Linux (x86 and x86_64). The project's code is distributed under the MPLv2 (Mozilla Public License). The project maintains a traditional interface organization, without […]

How to connect the HX711 ADC to the NRF52832

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1. Introduction The task at hand was to develop a communication protocol for the nrf52832 microcontroller with two half-bridge Chinese strain gauges. The challenge was significant due to the lack of clear information available. Likely, the root of the problem lies within the SDK from Nordic Semiconductor — its constant version updates, some redundancy, and the complexity of the functionality. I had to write everything […]

The most accurate weather forecast: a bot for Telegram on cloud functions.

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There are many services that provide weather information, but which one should you trust? When I started cycling frequently, I wanted the most accurate information about the weather conditions in the places I ride. My first thought was to build a small DIY weather station with sensors and gather data from it. However, I did not want to "reinvent […]

The Story of Physically Deleting 300 Million Records in MySQL

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Introduction Hello. I am ningenMe, a web developer. As the title suggests, my story is about physically deleting 300 million records in MySQL. I was intrigued by this, so I decided to create a memorandum (guide). Start - Alert In the batch server that I use and maintain, there is a regular process that collects data from the last month once a day from […]

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