Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business3 min
How to Evaluate a Development Agency's Portfolio and Cases
Ignore pretty screenshots: open the live products, clarify the agency's exact role in each case and talk to at least two past clients — that shows the team's real level.
Practice - Web development4 min
Feature-Sliced Design: Scalable Frontend Architecture Explained
Feature-Sliced Design splits a frontend into layers ordered by responsibility, each layer into business-domain slices, and each slice into technical segments; modules may import only from layers below them and only through a slice's public API.
Advanced - SEO3 min
Google vs Yandex SEO: Key Ranking Differences
Both engines share the same foundation of technical quality, useful content and usability, but Yandex leans harder on region, user behavior and commercial factors while Google relies more on links and content quality; one site can be optimized for both.
Basics - DevOps4 min
How to Deploy to a VPS with GitHub Actions over SSH
Create a dedicated deploy user and SSH key, store the private key in GitHub secrets, and let a workflow on push to main connect to the server, update the code, build and restart the service; protect the production environment with rules.
Practice - AI & automation4 min
Image Classification vs Object Detection vs Segmentation
Classification answers "what is in the image", detection answers "what and where" with boxes, and segmentation answers "which exact pixels" belong to an object; the more precise the answer, the costlier the labeling, so pick the simplest task that solves the business question.
Basics - Programming4 min
Git Merge vs Rebase: Differences and When to Use Each
Merge keeps history as it happened and adds a merge commit, while rebase rewrites commits into a straight line. Rebase only your own local branches and merge shared ones.
Practice - Mobile development4 min
How to Improve Mobile App Retention: Practical Tactics
Retention grows when users reach value (the aha moment) quickly, have a reason to come back and hit no churn points, and every change is verified on cohorts.
Practice - Marketing & analytics4 min
How to Read Traffic Source Reports in GA4
User acquisition shows where new users first came from, Traffic acquisition shows where each session starts; Unassigned and Direct usually grow because of non-standard UTMs and lost referrers, and you can build your own channel group in Data display settings.
Practice - Design & UX4 min
Figma vs Sketch vs Penpot: Which Design Tool to Choose
Figma is the default for browser-based team collaboration, Sketch is a native macOS app with local files, and Penpot is open source and can run on your own server; choose based on platform, budget, data requirements and what your partners use.
Basics - Telegram & messengers4 min
How to Set Up Bot Commands, Menu Button and Description in Telegram
Commands are set with setMyCommands per scope and language, the menu button with setChatMenuButton, and the description, short description and profile photo define what users see before pressing Start.
Practice - E-commerce & CRM4 min
Headless Commerce: Architecture, Benefits and When to Use It
Headless commerce separates the storefront from the commerce backend and connects them through APIs; it gives freedom in UI and sales channels but demands a strong team and higher ongoing effort.
Advanced - Security3 min
HTTP vs HTTPS: Why Every Website Needs Encryption
Over plain HTTP anyone on the same network or along the route can read and change the traffic, browsers label such sites Not secure, and many modern features simply do not work, so every site, even a simple landing page, needs HTTPS.
Basics - Databases & data3 min
OLTP vs OLAP: Transactional vs Analytical Databases
OLTP databases handle many small application operations such as orders, payments and sign-ups. OLAP databases are built for heavy analytical queries over large amounts of history. Mixing both workloads in one database is a common cause of slow production systems.
Basics - Hosting & cloud4 min
How Anycast Routing Works in CDNs and DNS
With anycast, the same IP prefix is announced via BGP from many data centers, so the internet's routing delivers each user's packets to the network-closest point of presence, spreading load and attacks across all of them.
Advanced - IT careers4 min
How to Conduct a Technical Interview as an Interviewer
A good technical interview is structured: a clear role profile, the same questions and tasks for every candidate, a written scoring rubric, independent feedback based on evidence and a respectful candidate experience.
Advanced - Tools & no-code4 min
How to Choose a Time Tracking Tool for Your Team
Decide first why you track time — billing clients, planning capacity or understanding costs — and then pick a tool that matches: Toggl Track for simple, pleasant tracking, Clockify for large teams on a budget, and Harvest when time needs to turn into invoices.
Basics - IT by industry4 min
Electronic Shelf Labels: How They Work and When They Pay Off
An electronic shelf label is a small shelf-edge display that receives prices over radio from the same system as the checkout; it pays off where prices change often, shelf errors are common and staff spend real time re-labeling.
Basics - Networks & office IT4 min
MikroTik Router Basic Setup for a Small Office
Start from the default configuration, change credentials and block management from the internet, set up WAN, LAN and DHCP, keep the default firewall, put guests on a separate network and save export and backup files regularly.
Practice - IT for business3 min
How to Launch a SaaS Product: Steps from Idea to First Customers
First confirm the problem is real and people will pay to solve it, then ship a narrow MVP with working payments and simple onboarding, and find your first customers personally through direct sales and conversations.
Practice - Web development3 min
Flexbox vs CSS Grid: When to Use Which
Flexbox lays items out along one axis, a row or a column, while Grid controls rows and columns at the same time. Use Flexbox for components, Grid for page structure and grids, and combine them freely.
Basics - SEO3 min
How Long Does SEO Take to Show Results
First movement usually appears within weeks, noticeable organic growth takes several months, and a new site in a competitive niche often needs six months to a year to reach stable traffic.
Basics - DevOps3 min
Build and Push Docker Images with GitHub Actions
Use Docker's official actions (setup-buildx, login, metadata, build-push) with type=gha caching — the image builds fast, gets commit and version tags and lands in GHCR or Docker Hub.
Practice - AI & automation3 min
How to Write an AI Usage Policy for Your Employees
A good AI policy fits on one or two pages and answers five questions: which tools are allowed, what data must never go in, who reviews the output, when to disclose AI use and who is responsible for what.
Practice - Programming4 min
Git Stash: How to Save Unfinished Work Without Committing
git stash temporarily moves uncommitted changes onto a separate stack and resets your working copy to the last commit; bring them back with git stash pop or apply, and use a WIP branch for work that will wait for days.
Practice
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