Category Administration
It's probably no secret that last year was a year of major changes for Apache Hadoop. Last year, Cloudera and Hortonworks merged (essentially acquiring Hortonworks), and Mapr, due to serious financial problems, was sold to Hewlett Packard. And while a few years earlier, for on-premises installations, the choice was often between Cloudera and […]
Hello everyone on this blog, here's the fourth post in the Quarkus series! The previous post was about how Quarkus combines MicroProfile and Spring. Let us recall that Quarkus is positioned as “ultra-fast subatomic Java”, aka “Kubernetes-oriented Java stack, tailored for GraalVM and OpenJDK HotSpot and assembled from the best libraries and standards.” Today we'll show you how to upgrade […]
Hello everyone, and here is the third post from the series about Quarkus! When developing Java microservices, Eclipse MicroProfile and Spring Boot are often considered separate and independent APIs. By default, programmers tend to use the APIs they are already used to, as learning new frameworks and runtime components is time consuming. Today we […]
9:00 am: You are videoconferencing in the office via a laptop. 9:00 pm: You are watching a live broadcast on your mobile phone at home. Wait a minute, have you ever wondered what kind of wireless devices are running on your unhindered network? Of course, you have heard people around you talk about the router from time to time. What about wireless access points (access points)? […]
When it comes to automating processes in the petrochemical industry, the stereotype is often triggered that production is complex, which means that everything that can be reached is automated there thanks to process control systems. Actually not quite like that. The petrochemical industry is indeed quite well automated, but this is true for the main technological process, where automation and minimization of the human factor are critical. All related processes […]
I suggest you read the transcript of Vladimir Sitnikov's early 2016 report "PostgreSQL and JDBC: Squeezing Out All the Juices" Good day! My name is Vladimir Sitnikov. I have been working at NetCracker for 10 years. And I mainly deal with performance. Everything related to Java, everything related to SQL is what I love. And today I will tell you […]
The amount of advertising around us can grow tens and even hundreds of times. Alexey Chigadaev, head of international digital projects at iMARS China, spoke about how 5G technology can contribute to this. So far, 5G networks have been put into commercial operation in only a few countries around the world. In China, this happened on June 6, 2019, when the Ministry of Industry and Information Technology officially issued the first […]
For four months now, I've been working on a project I call "Development of Blockchain-Based Data Protection and Management Tools for Government and Industrial Spheres." Now I'd like to share how I started this project, and I'll now describe the program code in detail. This is the first article in a series. Here, I describe the server and the protocol. On […]
The media is full of news about the epidemiological situation and self-isolation recommendations. But there are no simple recommendations for businesses. Company leaders are faced with a new challenge: how to transition employees to remote work with minimal loss of productivity and organize their work so that everything remains "as before." What worked in the office often doesn't work in […]
I'll tell you a story today. The story of the evolution of computing technology and the emergence of remote work from ancient times to the present day. The development of IT. The main thing that can be taken away from the history of IT is… It goes without saying that IT evolves in a spiral. The same solutions and concepts that were discarded decades ago are taking on new meaning […]
The effect of bloating tables and indexes (bloat) is widely known and is present not only in Postgres. There are ways to deal with it “out of the box” like VACUUM FULL or CLUSTER, but they lock tables during operation and therefore cannot always be used. The article will have some theory about how bloat occurs, how you can deal with it, […]
Since the previous publication (xswitcher at the “proof of concept” stage) received a lot of constructive feedback (which is nice), I continued to spend my free time developing the project. Now I want to spend a little bit of yours... The second step will be not quite familiar: proposal / discussion of the design of the configuration. Somehow it turns out that it is wildly boring for normal programmers to set up all these twists. To not […]