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22.12.2025 − 28.12.2025
Habr
NikoCerens @ Habr · 12/22/2025 16:27 EDT

Тот самый 19-летний «визионер»: показываю архитектуру своего AI-бота для микро-обучения (n8n + Supabase + OpenAI)

В прошлом посте мне предрекли судьбу старухи у разбитого корыта. Комментаторы справедливо заметили: «Визионер без хард-скиллов - это просто мечтатель». Я обещал не спорить, а показать результат. Время пришло.Убираем лирику, достаем «мясо». Внутри - полный разбор архитектуры AI-платформы на n8n + Supabase + OpenAI: как реализовать рекуррентные платежи, SRS-систему повторений и генерацию PDF-дипломов, не написав и сотни строк кода вручную. Смотреть архитектуру и «макароны» n8n Read more

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Habr
kaze_no_saga @ Habr 1 place · 11/08/2022 07:14 EDT

[Translation] Queries in PostgreSQL. Nested Loop

So far we've discussed query execution stages, statistics, and the two basic data access methods: Sequential scan and Index scan.The next item on the list is join methods. This article will remind you what logical join types are out there, and then discuss one of three physical join methods, the Nested loop join. Additionally, we will check out the row memoization feature introduced in PostgreSQL 14. Read more Read more

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Habr
toolateitsme @ Habr 2 place · 11/08/2022 05:33 EDT

[Translation] How to Customize UI Artefacts for Selenide + Selenoid + Allure (with TestOPS)

The common combination of JUnit5, Selenide and Allure has proven to be stable and reliable for autotesting. The remaining issue, however, lies in test length increase up until the rise of overall test numbers. The resulting video files turn out to be over an hour. Alexander Kochergin, Lead engineer at Innotech, has found a way to simplify the process. Read more Read more

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Habr
alextodef @ Habr 1 place · 11/07/2022 02:10 EDT

Как техдолг может утопить команду, и что делать, чтобы этого не допустить

Существует миф, что один сильный программист может быть в 10 раз продуктивнее другого — ten-X developer. Я считаю, что таких программистов не бывает, но есть ten-X команды, которые перформят в 10 раз лучше самой слабой команды. Чтобы стать ten-X team, нужно поменять отношение к техдолгу.Всем привет! Меня зовут Олег Федоткин, я руковожу разработкой PAAS в компании «СберМаркет». Эта история про менеджмент и инженерные практики.  Ten-X появляется как раз там, где... Read more

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Habr
akniyetc @ Habr 2 place · 11/06/2022 14:20 EDT

[Translation] Size does matter… (part 1)

No matter how we deceive ourselves - size matters! Of course, we will talk about the size of our android application, where we add a bunch of cool features, and we don’t even think about how this can negatively affect the app size. Therefore, we will learn how to detect app size regression on CI to automate this process. In this part, we will discuss how you can easily check... Read more

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Habr
AlexDevFx @ Habr 1 place · 11/05/2022 12:38 EDT

.NET: Couple words about using MemoryCache

In this post, I describe how to use MemoryCache and track lifetime of entities in .NET applications. Read more Read more

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Habr
AlexDevFx @ Habr 2 place · 11/05/2022 12:25 EDT

Sharing .NET-experience: Streams pooling by using Microsoft.IO.RecyclableMemoryStream

The pooling is the good practice to reuse created resources instead of a new allocation. I found Microsoft.IO.RecyclableMemoryStream package for using memory streams pooling during logging HTTP-requests in my server. Read more Read more

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Habr
kas_elvirov @ Habr 1 place · 11/04/2022 10:50 EDT

[Translation] Tutorial: Frontity — Setting Up Authorization for WordPress Private Endpoints

ForewordThis tutorial is intended primarily for those new to Frontity (React framework for WordPress) development.Primary goalCollect in one place all the necessary information for setting up authorization for WordPress private endpoints using the example of getting a menu collection (wp-json/wp/v2/menus). Read more Read more

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Habr
netsvetaev @ Habr 2 place · 11/04/2022 04:24 EDT

InvokeAI 2.1 Release

The InvokeAI team is excited to share our latest feature release, with a set of new features, UI enhancements, and CLI capabilities. Read more Read more

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Habr
yakorolev @ Habr 3 place · 11/03/2022 14:58 EDT

Methodology for calculating results of a task set: taking into account its level of difficulty

In the world of academic knowledge evaluation, objective calculation of large data presents a serious problem. Can a student studying in an Advanced Maths class and getting B-marks be evaluated equally with another student, getting B-marks in a General Maths class? Can we create a system that would take into account the level of difficulty those students face?This article will describe a system of independent evaluation we have been using... Read more

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Habr
kaze_no_saga @ Habr 1 place · 11/01/2022 08:32 EDT

[Translation] PostgreSQL 16: Part 1 or CommitFest 2022-07

August was a special month in PostgreSQL release cycle as the first CommitFest for the 16th PostgreSQL release was held.Let's compile the server and check out the cool new stuff! Read more Read more

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Habr
kaze_no_saga @ Habr 2 place · 11/01/2022 02:35 EDT

[Translation] Queries in PostgreSQL. Sort and merge

In the previous articles, we have covered query execution stages, statistics, sequential and index scan, and two of the three join methods: nested loop and hash join.This last article of the series will cover the merge algorithm and sorting. I will also demonstrate how the three join methods compare against each other. Read more → Read more

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Habr
virus_xl @ Habr 1 place · 10/28/2022 02:06 EDT

[Translation] Строим приманки для взломщиков с помощью vcluster и Falco. Эпизод I

Прим. переводчика: автор статьи предлагает реализацию honeypot'а («приманки») на основе виртуального кластера Kubernetes, чтобы обнаруживать попытки взлома K8s-инфраструктуры. Также в статье рассматриваются отличия низкоинтерактивных и высокоинтерактивных приманок.Если не вдаваться в детали, главная задача приманок — соблазнять злоумышленников, отвлекая от реальных целей, и попутно собирать информацию об их деятельности. Сегодня мы попытаемся создать такую приманку с помощью vcluster и Falco.В первой части. Read more

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Habr
Zashibis @ Habr 2 place · 10/27/2022 15:00 EDT

Quantum Computers Without Math and Philosophy

In this article, I will break down all the secrets of quantum computers piece by piece: what superposition (useless) and entanglement (interesting effect) are, whether they can replace classical computers (no) and whether they can crack RSA (no). At the same time, I will not mention the wave function and annoying Bob and Alice that you might have seen in other articles about quantum machines.The first and most important thing... Read more

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Habr
Shapelez @ Habr 3 place · 10/27/2022 10:27 EDT

Q3 2022 DDoS attacks and BGP incidents

With the end of the 2022' third quarter, we invite you to take a tour into DDoS attacks mitigation and BGP incidents statistics recorded from July to September. Read more Read more

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Habr
stepn_f @ Habr · 10/27/2022 08:18 EDT

MUST HAVE FEATURES IN YOUR CRM

One of the major challenges facing companies that transitioned online is how to deliver quality and personal customer service to their clients without face-to-face interaction. It’s true that technology can cause exponential growth to companies. However, business owners and leaders must also guard this important aspect of running a business. Fortunately, there are now a lot of CRM systems or customer relationship management systems available online.What are the features and... Read more

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Habr
IgKend @ Habr 1 place · 10/21/2022 14:42 EDT

How Yandex Made Their Biggest Improvement in the Search Engine with the Help of Yandex.Toloka

Toloka is a crowdsourcing platform and microtasking project launched by Yandex to quickly markup large amounts of data. But how can such a simple concept play a crucial role in improving the work of neural networks? Learn how Read more

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Habr
alextodef @ Habr 2 place · 10/21/2022 11:08 EDT

Почему в вашем проекте не нужны Service Objects? Наводим порядок в коде

Привет! Я Олег Федоткин, Head of PaaS СберМаркета. Хочу поговорить про Service Objects: что с ними не так, почему от них стоит избавляться и как это сделать. В этой статье я поделюсь своей болью о Service Objects, разберу их ключевые проблемы на примере из опенсорса и предложу собственное решение с чек-листом по его внедрению. Поехали! Read more Read more

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Habr
graf4444 @ Habr 1 place · 10/19/2022 08:11 EDT

[Translation] Synchronous Request-Response using REST and Apache Kafka

At first glance making REST and Apache Kafka compatible seems quite a challenge. However Innotech team nailed the task. Kirill Voronkin, Lead Developer at Innotech, shared the details on transforming unsynchronized queries into synchronized. Read more Read more

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Habr
Valeroncho @ Habr 1 place · 10/18/2022 08:15 EDT

How to Create a Half Circle Progress Bar

I bet you all had situations when a designer made a cool-looking UI and you just thought “cool, but how to implement this”. The same happened to me when a saw this progress bar in Figma.Good thing is that in Flutter it’s pretty easy to create custom views and they will look awesome on every platform, but sometimes you just need to remember all these things that you have learned... Read more

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Habr
quaer @ Habr 1 place · 10/16/2022 09:10 EDT

About LC ladders

LC ladder component values can have different values for the same transfer function. Published tables have only one set. Why? Read more Read more

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29.12.2025 11:28
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