Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business3 min
Legacy System Modernization Strategies for Businesses
For most companies the safest path is replacing parts of the system gradually with the strangler pattern; a full rebuild is rarely justified. The right choice depends on what actually hurts: infrastructure, code or the business model itself.
Advanced - Web development3 min
How to Build a Multilingual Website: i18n in Practice
A multilingual site rests on four decisions: a separate URL per language, translations in keyed files, gentle locale detection without forced redirects, and formatting numbers, dates and plurals with Intl.
Practice - SEO3 min
Keyword Research: How to Build a Semantic Core Step by Step
A semantic core is built in five steps: seed queries, expansion with tools, cleaning out junk, clustering by search results, and mapping each cluster to one page. The outcome is a site map where every page has a clear job.
Practice - DevOps4 min
Kubernetes Troubleshooting: CrashLoopBackOff, Pending and OOMKilled
The pod status tells you where to look: Pending is a scheduling problem, CrashLoopBackOff means the container starts and dies, OOMKilled means it ran out of memory. Four commands cover most cases: get, describe, logs --previous and get events.
Advanced - AI & automation4 min
How to Integrate an LLM API Into Your Product
Call the LLM only from your server, stream responses to users, handle rate limits with backoff retries, keep a fallback provider and log every request with its token usage.
Practice - Programming4 min
var vs let vs const in JavaScript: Scope and Hoisting
Use const by default and let when the variable must be reassigned; avoid var, because it is function-scoped and hoisted with undefined, which causes subtle bugs.
Basics - Mobile development4 min
Mobile App for a Restaurant or Delivery Service: Key Features
At launch you need a menu, cart, checkout with address and payment, order status and a POS integration; loyalty and courier tracking come later, and with low order volume an aggregator or Telegram bot is cheaper.
Basics - Marketing & analytics4 min
Landing Page Conversion Checklist: What to Fix First
Fix a landing page in order of impact: first a clear offer and a match with the ad, then speed and mobile layout, then the CTA and form, and only after that trust signals and design details. Before any change, make sure leads are tracked correctly.
Practice - Design & UX4 min
Mobile Navigation Patterns: Tab Bar, Hamburger and More
If an app has 3–5 main sections that people switch between often, use a bottom tab bar; put rarely used items in a menu or a Profile tab, use top tabs to split content inside one section, and treat gestures only as shortcuts.
Practice - Telegram & messengers4 min
Telegram Channel Statistics: Reach, ERR and Views Explained
For a business channel, what matters is average post reach, ERR (the share of subscribers who actually see posts), sources of new subscribers and unsubscribes after posts; Telegram's built-in stats cover all of this, while TGStat and Telemetr help benchmark the channel and vet others before buying ads.
Basics - E-commerce & CRM4 min
How to Migrate Customer Data From Excel to a CRM
Collect and review every spreadsheet, remove duplicates and standardize formats, map columns to CRM fields, run a test import on a small sample, validate the result, and only then migrate the full database together with deal history.
Practice - Security4 min
SAST vs DAST vs IAST: Automating Security Testing in CI/CD
SAST reads source code and catches risky patterns early, DAST attacks a running app from outside, IAST watches the app from inside during tests; a practical pipeline runs SAST on every pull request, DAST against staging, and fails builds only on new high-confidence findings.
Advanced - Databases & data3 min
Redis Use Cases: Caching, Sessions, Queues and Rate Limits
Redis is an in-memory store for fast, short-lived data: use it for cache with TTL, sessions, lightweight queues, pub/sub, leaderboards and rate limits, while keeping the source of truth in your main database.
Practice - Hosting & cloud4 min
How to Set Up a Public Status Page for Your Website or Service
A status page is a separately hosted page that shows the health of each part of your service and posts incident updates, so users check it instead of flooding support during an outage.
Practice - IT careers3 min
From Junior to Middle Developer: A Practical Growth Plan
A middle developer differs from a junior not by the number of technologies but by independence: they take a medium-sized task to production without constant help. Growth comes from 6 to 12 months of deliberate tasks, regular feedback and written evidence.
Practice - Tools & no-code4 min
Notion Databases: Properties, Views and Relations Explained
A Notion database is a set of pages with typed properties; well-chosen properties enable filtering and sorting, views show the same data for different jobs, and relations connect databases without duplicating anything.
Practice - IT by industry4 min
How to Launch Telemedicine: Video Consultations for Clinics
To launch telemedicine a clinic needs an end-to-end patient flow — booking, prepayment, a secure video call, a conclusion in the record and a follow-up — a choice between a ready-made platform and video built into its own system, and a clear list of consultations that your country's law allows to be done remotely.
Practice - Networks & office IT4 min
How to Plan Structured Cabling and a Server Rack for an Office
Plan at least two ports per workplace plus drops for Wi-Fi, printers and cameras with spare capacity, terminate everything on patch panels in a rack with proper power and ventilation, and require labeling, test reports and as-built drawings from the installer.
Practice - IT for business3 min
Legacy Systems: When Old Software Becomes a Business Risk
Old software becomes a risk when it can no longer be patched safely, nobody can maintain it, it cannot connect to new services, and upkeep grows faster than the value it delivers.
Basics - Web development4 min
Next.js App Router Guide: Layouts, Routing and Server Actions
In the App Router every folder in app/ is a URL segment, and the special files page, layout, loading and error define the page, its wrapper and its states; data changes go through Server Actions without a separate API.
Practice - SEO4 min
Can a One-Page Website Rank? SEO for Landing Pages
A one-page site can rank for a narrow cluster of closely related queries, but not for many different topics; once your keywords spread out, you need separate service pages and a blog.
Practice - DevOps3 min
Kubernetes Ingress: How to Route External Traffic to Services
Ingress is a single entry point for HTTP(S) traffic that routes requests to services by host and path; it needs an Ingress controller such as ingress-nginx, and cert-manager handles TLS certificates.
Practice - AI & automation3 min
How to Measure the ROI of an AI Project
AI ROI is the difference between measurable benefits (time saved, fewer errors, higher conversion) and the full cost of ownership, compared against a baseline captured before launch.
Practice - Programming3 min
Kotlin Coroutines: A Practical Introduction
Kotlin coroutines let you write async code sequentially: suspend functions do not block threads, launch and async start work inside a scope, and cancellation flows down the hierarchy.
Practice
Have an idea or a task? Tell us about it
We'll reply within one business day and propose a solution. The consultation is free.