Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
How to Prepare a Brief for a Development Studio
A brief is 1-3 pages on why you need the product, who it is for, what it must do, what it connects to, and what budget and deadline apply; the detailed spec comes later, together with the studio.
Practice - Web development3 min
How to Choose a CMS for Your Website
Choose a CMS by your content and your people, not by popularity: WordPress fits a typical site with a blog, a headless CMS fits complex frontends and multiple channels, and a custom admin fits unique business logic.
Practice - SEO4 min
How to Choose an SEO Agency or Specialist: Questions to Ask
A good SEO contractor starts with an audit and a prioritized plan, reports on traffic and leads rather than just positions, never guarantees first place and leaves all accounts and results in your ownership.
Basics - DevOps4 min
GitHub Actions vs GitLab CI vs Jenkins: CI/CD Tools Compared
If your code is on GitHub, use GitHub Actions; if it is on GitLab or you want a self-hosted all-in-one, use GitLab CI; pick Jenkins when you need maximum flexibility and have someone to maintain it.
Basics - AI & automation3 min
Document Chunking for RAG: Strategies, Sizes and Overlap
A chunk should make sense on its own and hold one idea. For most cases, splitting by document structure, recursively dividing long sections with a small overlap, works best, and the size is tuned on test questions.
Practice - Programming3 min
Goroutines and Channels in Go: Concurrency Guide
A goroutine is a lightweight function started with go, a channel is a safe way to pass it data, and WaitGroup plus context control shutdown so goroutines do not leak.
Practice - Mobile development4 min
Apple Human Interface Guidelines: The Essentials for App Teams
The HIG is Apple's official guide to how an iOS app should look and behave; in practice what matters most is familiar navigation with a tab bar and Back button, Dynamic Type, touch targets of at least 44×44 pt, respecting safe areas and never hijacking system gestures.
Basics - Marketing & analytics4 min
Google Ads Mistakes That Waste Your Budget and How to Fix Them
Most wasted budget comes from missing or broken conversion tracking, the "Presence or interest" location option, the Display Network left on in Search, no negative keywords and smart bidding without data. Most of them can be fixed without pausing the campaign.
Practice - Design & UX3 min
How to Conduct User Interviews for UX Research
A good interview is about what people have actually done, not what they think or would do; recruit from your real audience, ask open questions without hints, and synthesize notes into themes backed by evidence.
Practice - Telegram & messengers4 min
How to Build a Telegram Bot in Node.js with grammY
In grammY a bot is a Bot object with a middleware chain: commands, keyboards and sessions come from bot.command, InlineKeyboard and the session plugin, and for development you start it with one line, bot.start().
Practice - E-commerce & CRM4 min
How to Launch a Loyalty Program for an Online Store
First decide which customer behavior you want to change, then pick a simple mechanic, calculate its cost, connect it to the store and CRM, and compare members against a control group.
Practice - Security3 min
OWASP Top 10 Explained in Plain Language
The OWASP Top 10 is a list of the most common and dangerous classes of web application vulnerabilities. Start checking with access control, configuration, dependencies, injection and login.
Basics - Databases & data4 min
PostgreSQL Full-Text Search: Do You Need Elasticsearch
For most sites PostgreSQL is enough: tsvector with a GIN index gives relevant word search and pg_trgm handles typos, while Elasticsearch pays off only with heavy search load, complex ranking or rich faceted search.
Practice - Hosting & cloud4 min
How to Choose VPS Specs: CPU, RAM, Disk and Bandwidth
Start with a modest plan that has comfortable RAM headroom and NVMe storage, watch real load for a week, and then increase only the resource that actually hits its limit.
Practice - IT careers4 min
How to Price Freelance IT Work: Hourly vs Fixed Price
Hourly pricing suits vague or long-running work, a fixed price suits a clearly described scope; either way, break the work into small pieces, add a risk buffer and put in writing what the price includes.
Practice - Tools & no-code4 min
Jira vs Trello vs Asana: Choosing a Task Tracker
Trello fits small teams with a simple board-based process, Asana fits cross-functional projects where deadlines matter, and Jira fits software teams running Scrum or Kanban with detailed reporting.
Basics - IT by industry4 min
Fuel Monitoring and Telematics: Stopping Fuel Theft in a Fleet
Fuel theft is caught by cross-checking three sources — the tank level sensor, CAN-bus consumption data and fuel card transactions; mismatches become alerts and reports.
Practice - Networks & office IT4 min
pfSense vs OPNsense vs MikroTik: Choosing an Office Firewall
OPNsense is the best fit for most offices with x86 hardware and built-in IDS/IPS, pfSense is a mature alternative with a huge knowledge base, and MikroTik is a compact, affordable router for admins fluent in RouterOS who do not need built-in IPS.
Advanced - IT for business4 min
How to Prioritize a Product Backlog by Business Value
Score every item by business value and effort, run RICE on the top candidates, check with the Kano model that basic expectations are covered, then build what delivers the most value per unit of effort.
Practice - Web development3 min
How to Choose a Frontend Framework for a Web Project
Start with project type and team skills: Astro for content sites, React or Vue with SSR for SEO-driven products, Angular for large enterprise systems.
Practice - SEO4 min
How to Fix CLS: Eliminating Layout Shifts on Your Site
CLS grows when elements appear without reserved space. Set dimensions for media and slots, never insert content above what users already see, and tune font loading.
Practice - DevOps3 min
What Is GitOps and How to Implement It with Argo CD
GitOps means the desired state of your infrastructure lives in Git, and an in-cluster agent such as Argo CD pulls changes and keeps the cluster matching that state.
Advanced - AI & automation4 min
EU AI Act Explained for Companies Outside the EU
The AI Act applies based on where AI is used, not where a company is registered: if your AI system is placed on the EU market or its output is used in the EU, the law covers you, and your duties depend on the risk category.
Basics - Programming4 min
Graph Traversal: BFS vs DFS with Code Examples
BFS explores a graph layer by layer with a queue and finds shortest paths in unweighted graphs; DFS goes deep with a stack or recursion and suits cycle detection and topological sorting.
Practice
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