Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- Mobile development4 min
Flutter State Management: Provider vs Riverpod vs BLoC
Provider fits small apps, Riverpod is a sensible default for most new projects, and BLoC pays off in large teams that need strict rules and a traceable flow of events.
Advanced - Marketing & analytics4 min
What Is First-Party Data and Why It Matters Without Cookies
First-party data is information you collect about customers yourself through your website, app, CRM and forms. As third-party cookies and cross-site tracking shrink, it becomes the reliable foundation for analytics, targeting and personalization.
Basics - Design & UX4 min
Empty State Design: Turning Blank Screens Into Guidance
An empty state should explain what belongs on the screen, why it's empty right now and what to do next, with one clear action; first use, no results, errors and cleared screens each need their own message.
Practice - Telegram & messengers4 min
What Is Telegram Ads and How the Official Ad Platform Works
Telegram Ads is the messenger's official ad platform that shows short sponsored messages in large public channels, bots and search; you pay per thousand impressions through CPM bidding and fund the account in TON directly or in regular currency via official resellers.
Basics - E-commerce & CRM4 min
How to Integrate Delivery Services Into an Online Store
Delivery integration means four connected processes through the carrier's API: price and time estimates at checkout, automatic shipment creation after payment, status sync into the order and pickup point selection, plus a shared adapter layer in your code when you work with several carriers.
Practice - Security4 min
How OAuth 2.0 and OpenID Connect Work
OAuth 2.0 gives an app limited access to an API without sharing the user's password, and OpenID Connect adds an ID token on top that tells the app who actually signed in.
Basics - Databases & data5 min
Designing a Ledger Database for Payments and Balances
Store every money movement as an immutable transaction with entries that sum to zero, keep amounts as integers in tiyin, make provider callbacks idempotent with a unique key, and lock the account row before debiting it.
Advanced - Hosting & cloud4 min
What Is DNSSEC and Should You Enable It
DNSSEC adds digital signatures to DNS records so a resolver can verify the answer was not tampered with; enable it if your DNS provider and registrar support it without manual hassle, but handle the DS record carefully when changing providers.
Advanced - IT careers4 min
How to Prepare Your GitHub Profile for a Job Search
Fill in your profile header, add a short profile README, pin 4–6 of your best repositories with clear descriptions and READMEs, and let your commits show steady, meaningful work.
Practice - Tools & no-code4 min
Google Shared Drives: Structure and Access Permissions
Keep company files on shared drives, not in employees' My Drive: files belong to the organization, access is granted to groups by role, and nothing disappears when someone leaves.
Practice - IT by industry5 min
Mobile Daily Reports From Construction Sites: How to Set Up
A site foreman fills in a short in-app template with geotagged photos, volumes, crews, equipment and issues, and management sees progress across all sites in one dashboard without visiting them.
Practice - Networks & office IT4 min
How to Choose a Router for an Office: Key Specs to Check
Pick a router by its real throughput with firewall and VPN enabled, the number of concurrent users and devices, two WAN ports, VLAN and VPN server support and a vendor with regular firmware updates — not by the speed printed on the box.
Practice - IT for business4 min
How to Build an In-House Development Team from Scratch
Start with an experienced tech lead who owns architecture and hiring, then add developers for the product's immediate needs, and set up processes and onboarding before the team grows.
Practice - Web development4 min
CSS Units Explained: px, em, rem, %, vw and vh
px is a fixed size, rem follows the root font, em follows the current or parent font, % follows the parent box and vw/vh follow the viewport; rem works best for fonts and spacing, and dvh or svh for full-screen blocks on mobile.
Basics - SEO4 min
How to Get More Reviews on Google Maps, Yandex Maps and 2GIS
Ask every customer for a review right after the purchase via a direct link or QR code, never offer a reward or ask only happy customers, and reply to every review — this grows both your rating and your map rankings.
Practice - DevOps4 min
Docker Volumes vs Bind Mounts: How to Persist Container Data
Anything written to a container's layer disappears when the container is removed. Use named volumes for application data and bind mounts for source code in development, and back up separately with tested restores.
Practice - AI & automation3 min
AI Use Cases for Business: Practical Scenarios That Pay Off
AI pays off fastest in routine, high-volume work with text and an easy way to check results: support answers, request handling and document processing.
Basics - Programming4 min
Data Structures Every Developer Should Know
Pick a data structure by its main operation: index access means an array, key lookup a hash map, order and ranges a tree, "most urgent item" a heap, and relationships between objects a graph.
Basics - Mobile development4 min
Flutter vs React Native: An Honest Comparison
Both frameworks are mature and fit serious apps. Flutter draws the UI itself and looks identical everywhere, while React Native uses native components and wins when you already have a React and TypeScript team.
Basics - Marketing & analytics4 min
GA4 BigQuery Export: Analyzing Raw Marketing Data
The GA4 BigQuery export writes every site event as its own row, with no sampling or interface thresholds. Linking takes minutes in the GA4 admin; the core skills are UNNEST for event parameters and filtering table dates so queries stay cheap.
Advanced - Design & UX4 min
Figma Auto Layout: A Practical Guide
Auto Layout turns a frame into a container that arranges its content by the direction, spacing and sizing rules you set. Once you master Hug, Fill and Fixed plus nesting, you get buttons, cards and lists that adapt to their text and to the screen width on their own.
Practice - Telegram & messengers4 min
How to Build an Appointment Booking Bot in Telegram
A booking bot walks the client through service, specialist, date, time and confirmation, calculates free slots from schedules and service length, sends reminders on its own, lets people reschedule with one tap and keeps all bookings in a single calendar or CRM.
Practice - E-commerce & CRM4 min
Dynamic Pricing in E-commerce: How It Works and When to Use It
Dynamic pricing automatically adjusts prices based on demand, stock and competitor prices; it only works when every price has a margin-based floor and clear limits.
Basics - Security4 min
How to Choose a Password Manager for Yourself and Your Team
Choose a manager with zero-knowledge encryption, published independent audits, convenient sharing and 2FA; Bitwarden, 1Password and KeePass all fit different needs, and a team migration works best as a short pilot followed by rotating every shared password.
Basics
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