Category: Administration

Hosting and Dedicated Servers: Answering Questions. Part 4

In this series of articles, we want to address the questions that arise for people when working with hosting providers and dedicated servers in particular. Most of the discussions took place on English-language forums, where we aimed to assist users primarily with advice rather than self-promotion, providing a detailed and impartial response, given that our experience in the field spans over 14 years, hundreds of […]

How and why the noatime option improves performance in Linux systems

Updating atime affects system performance. What is going on and what can be done about it — read in the article. Whenever I update Linux on my home computer, I have to deal with certain tasks. Over the years, this has become a habit: I back up my files, wipe the system, install everything from scratch, restore my files, […]

HCI: ready solutions for building a flexible corporate IT infrastructure

In IT, there is a concept known as End User Computing — computing for end users. How, where, and in what ways can such solutions assist, and what should they be like? According to today's requirements, employees want to be able to work securely from any device, anywhere. Technological aspects make up about 30% of the incentives for engaged employees, as reported […]

Physical Education vs Computer Science, help make a choice

This is the second part of the 'series' on Russian school education and the opportunities for IT to enhance it in various areas. For those who haven't read it, I recommend starting with the first part. I want to clarify that this article is not about the optimal choice of subjects for the Unified State Exam (EGE) or the debate between 'jocks' and 'nerds.' It largely focuses on integrity and efficiency. At the end […]

The most important thing about Wi-Fi 6. No, seriously

Hello. According to Einstein's simplicity theory, the main indicator of understanding a subject is the ability to explain it as simply as possible. In this post, I will try to explain the functioning of just one detail of the new standard as clearly and thoroughly as possible, which for some reason the Wi-Fi Alliance deems unworthy of mention in the infographic about the new features of Wi-Fi 6, although it is, as we will soon […]

Simplifying work with Check Point API using Python SDK

The full power of interacting with APIs is revealed when used together with programming code, allowing for the dynamic formation of API requests and tools for analyzing API responses. However, the Python Software Development Kit (hereinafter — Python SDK) for Check Point Management API remains relatively unnoticed, which is a pity. It significantly simplifies life for developers and automation enthusiasts. Python […]

Check Point R80.10 API. Management through CLI, scripts, and more

I'm sure that everyone who has ever worked with Check Point has had a complaint about the inability to edit the configuration from the command line. This is particularly outrageous for those who have previously worked with Cisco ASA, where almost everything can be configured in CLI. With Check Point, it’s the opposite — all security settings were exclusively done through the graphical interface. However, some […]

Email Archiving in Zimbra Collaboration Suite Open-Source Edition

Email archiving with the ability to view it in the future is an important feature for large businesses. It can be used to address various complaints, conduct investigations, and in a number of other situations. This feature is also useful for SaaS providers to protect themselves in case a malicious user exploits their service for illegal activities. Specifically for these purposes […]

Micro Data Center: Why Are Miniature Data Centers Needed?

Two years ago, we realized something important: clients are increasingly interested in small forms and low kilowatts, so we launched a new line of products – mini and micro data centers. Essentially, we have placed the 'brains' of a full-fledged data center in a small cabinet. Like full-fledged data centers, they are equipped with all necessary engineering systems, including power supply components, […]

The Shine and Poverty of the LMDB Key-Value Database in iOS Applications

In the fall of 2019, a long-awaited event took place in the iOS team of Mail.ru Cloud. The Lightning Memory-Mapped Database (LMDB), which is quite exotic for the mobile world, became the main database for persistent application state storage. Below, we offer a detailed overview in four parts. First, we will discuss the reasons for such a non-trivial and difficult choice. Then we will move on to examining the three pillars […]

VxLAN Factory. Part 1

Hello, Habr. Currently, I am the head of the 'Network Engineer' course at OTUS. In anticipation of the launch of a new enrollment for the 'Network Engineer' course, I have prepared a series of articles on the VxLAN EVPN technology. There is a vast amount of material on working with VxLAN EVPN, so I want to compile various tasks and solutions to challenges in modern data centers. In the first part of the series […]

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