Java process memory management diagrams
There are a huge number of articles and diagrams on this topic on the Internet, however, in my opinion, none of them allows you to form a general idea of the memory use in the Java process. And without a general understanding, it is difficult…
Layer 7 DDoS attacks – protecting sites
Layer 7 DDoS attacks (application layer) are the easiest way to disable a website and harm your business. Unlike attacks at other tiers, where a powerful stream of network traffic must be set up to fail a site, attacks at tier 7 can proceed without…
Core Data + Repository pattern. Implementation details
The main idea of the repository is to abstract from data sources, hide implementation details, because, from the point of view of data access, this very implementation does not matter. Providing access to the main operations on data: save, load or delete is the main…
Stable instability – an oxymoron or a necessity?
Industrialization is raging in the IT field. There is nothing wrong with that, and even sometimes it is justified. Division of labor, planning, etc. The problem is that the industrial era has provoked the emergence of a large number of narrow specialists in IT who…
Internet in 2021. What does the statistics say?
Starting each new day, scrolling through the news resources more and more often the impression is formed that there are only hooligans, disasters, pandemic, redundancies around – in general, we live in troubled times. News from the IT world, as a rule, stand alone to…
You came to the project, and there… legacy
Let’s talk about the terrible codebase you are most likely dealing with right now. There is a project and you are needed to add new features and fix bugs. But you open IDE, make a pool of a repository with a project – and you…
How to work in a team that codes in 5 languages
Our team uses five programming languages at once: PHP, Go, Typescript, Java and Kotlin. When I first heard about this at an interview, I thought it was impossible to work like that – everything is too different. But after a year my opinion changed dramatically,…
TypedAPI: client-server for TypeScript
The emphasis is on maximum ease of use. The bottom line is this: you write the API as a regular TypeScript class with some restrictions, then the interface is automatically built from the class, which will be used by the client application. Some service information…
Most useful new C++ 20 features
In September last year, the ISO committee approved C++ 20 as the current version of the international standard. I suggest that you familiarize yourself with the most useful and long-awaited changes to the new standard. C++ Concepts Library The library defines fundamental concepts that can…
Semantics vs divs
A long time ago (15 years), almost everyone made websites and did not worry about what was inside it. We coded in tables, used everything that came to hand, and didn’t really bother about accessibility. And then HTML5 happened and away we go. A semantic…