Heading: Administration

Windows Subsystem for Linux (WSL) version 2: how will it be? (FAQ)

Under the cut is a translation of the published FAQ'a about the details of the future WSL second version (author - Craig Loewen). Issues covered: Does WSL 2 use Hyper-V? Will WSL 2 be available on Windows 10 Home? What will happen to WSL 1? Will she be abandoned? Will it be possible to simultaneously run WSL 2 and other third party virtualization tools (such as VMWare or Virtual […]

Loading FIAS into the database on MSSQLSERVER using improvised (SQLXMLBULKLOAD) tools. How it (probably) should not be done

Epigraph: "When you have a hammer in your hands, everything around you seems like nails." Somehow, a long time ago, it seems - last Friday, while walking around the office, the accursed bosses became concerned that I was spending time in idleness and contemplating cats. - Why don't you download FIAS, my dear friend! - said the authorities. – For the process of downloading something is not […]

Another monitoring system

16 modems, 4 cellular carriers = Upload speed 933.45 Mbps Introduction Hello! This article is about how we wrote a new monitoring system for ourselves. It differs from the existing ones by the possibility of high-frequency synchronous obtaining of metrics and very low resource consumption. The polling rate can be as low as 0.1 milliseconds with a timing accuracy of 10 nanoseconds between metrics. All binaries take […]

What is special about Cloudera and how to cook it

The market for distributed computing and big data, according to statistics, is growing at 18-19% per year. This means that the issue of choosing software for these purposes remains relevant. In this post, we will start with why we need distributed computing, dwell in more detail on the choice of software, talk about using Hadoop with Cloudera, and finally talk about choosing […]

Additional Uplinks in Intel C620 System Logic Architecture

In the architecture of x86 platforms, two currents have emerged that complement each other. According to one version, it is necessary to move towards the integration of computing and control resources in one crystal. The second approach professes the distribution of duties: the processor is equipped with a productive bus that forms a peripheral scalable ecosystem. It forms the basis of the topology of the Intel C620 system logic for high-level platforms. The fundamental difference from the previous chipset […]

Veeam Backup & Replication: Useful tips to ensure the viability of backups and replicas

Today I am again pleased to present you with useful tips from my colleague Evgeny Ivanov, team lead of the Veeam technical support team. This time Zhenya shared his recommendations for working with backups and replicas. I hope they will help you avoid common mistakes, and your replicas and backups will never be a "weak link" in the recovery process, if any. So, […]

Improving Wi-Fi performance. General principles and useful things

Everyone who collected, bought, or at least tuned a radio receiver probably heard such words as: sensitivity and selectivity (selectivity). Sensitivity - this parameter indicates how well your receiver can receive a signal even in the most remote areas. And selectivity, in turn, shows how well the receiver can tune to a particular frequency without the influence of other frequencies. […]

The evolution of the architecture of the trading and clearing system of the Moscow Exchange. Part 1

Hi all! My name is Sergey Kostanbaev, at the Exchange I am developing the core of the trading system. When they show the New York Stock Exchange in Hollywood movies, it always looks like this: crowds of people, everyone yelling something, waving papers, there is complete chaos. We have never had anything like this on the Moscow Exchange, because from the very beginning trading has been conducted electronically and […]

CJM for false positives of DrWeb antivirus

The chapter in which Doctor Web removes the Samsung Magician service DLL, declaring it a Trojan, and in order to leave a request to the technical support service, you must not only register on the portal, but indicate the serial number. Which, of course, is not, because DrWeb sends a key during registration, and the serial number is generated during the registration process using the key - and is not stored ANYWHERE. […]

MegaSlurm for Kubernetes engineers and architects

Kubernetes intensives will start in 2 weeks: Slurm-4 for those who get acquainted with k8s and MegaSlurm for k8s engineers and architects. Slurm-4 has the last 10 seats left in the hall. There are enough people who want to master k8s at a basic level. For an Ops who is getting to know Kubernetes, starting a cluster and deploying an application is already a good result. Dev has requests and […]

Internet History: Decay, Part 1

Other articles in the cycle: History of the relay The method of "rapid transmission of information", or the birth of the relay Long-ranger Galvanism Entrepreneurs And finally, the relay The talking telegraph Simply connect The forgotten generation of relay computers The electronic era The history of electronic computers Prologue ENIAC Colossus The electronic revolution The history of the transistor darkness From the crucible of war Repeated reinvention The history of the Internet The backbone […]

Internet History: Decay, Part 2

By approving the use of private microwave networks in the "over 890 solution," the FCC may have hoped that it could push all these private networks into its quiet corner of the market and forget about them. However, it quickly became clear that this was not possible. New individuals and organizations emerged pushing for changes to the existing regulatory platform. They offered many new […]