Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- Mobile development3 min
Mobile App Accessibility: Supporting VoiceOver and TalkBack
An app is accessible when every interactive element has a clear label and role, focus moves in a logical order, text scales, contrast is sufficient and touch targets are large. Verify it with VoiceOver and TalkBack turned on, on a real phone.
Practice - Marketing & analytics4 min
Google Consent Mode v2: What It Is and How to Implement It
Consent Mode v2 is how your site tells Google tags what a visitor agreed to, and the tags adjust: without consent they skip cookies, and Google partly recovers lost conversions through modeling. For advertising to EEA traffic, sending these signals is mandatory.
Advanced - Design & UX4 min
How to Write Error Messages Users Understand
A good error message says in plain language what happened, why, and what to do to fix it, with no blame, codes or jargon, and it appears where the user is already looking.
Practice - Telegram & messengers4 min
Telegram Bot Security: Tokens, Webhooks and Access Control
Treat the token as a password, verify every webhook request with a secret header, check permissions by user ID on the server, and treat all input, including callback data, as untrusted.
Advanced - E-commerce & CRM4 min
How to Start Selling on Uzum Market: Seller Guide
Register a business (sole proprietor or company), sign up in the Uzum seller portal, upload documents and strong product cards, pick a logistics model and calculate unit economics with commission, logistics and returns before your first shipment.
Practice - Security4 min
Privacy Policy and Cookie Consent: What Your Website Needs
A site that collects data through forms or runs analytics needs a privacy policy that describes real processing and user consent wherever the law requires it. Consent must be voluntary: refusing is as easy as accepting, and optional scripts stay off until the visitor chooses.
Practice - Databases & data4 min
How to Set Up PostgreSQL Streaming Replication
Allow replication on the primary, create a role and a slot, build the standby with pg_basebackup -R, watch lag in pg_stat_replication, and fail over with pg_promote or automatically with Patroni.
Advanced - Hosting & cloud4 min
IaaS, PaaS and SaaS Explained with Real Examples
IaaS gives you virtual hardware that you configure yourself, PaaS gives you a ready platform where you just deploy code, and SaaS gives you finished software you use in a browser.
Basics - IT careers3 min
Engineering Manager vs Staff Engineer: Choosing a Career Track
A manager achieves results through people and is judged by the team's output; a staff engineer works through technical decisions and influence across several teams. Choose based on which kind of daily work gives you energy, not on status.
Advanced - Tools & no-code4 min
Miro Online Whiteboard: How Teams Use It
Miro is an infinite online whiteboard where a team generates ideas, maps customer journeys, runs retrospectives and plans work together. The fastest way to start is with ready-made templates and facilitation tools such as the timer, voting and presentation mode.
Basics - IT by industry4 min
HL7 and FHIR: How Medical Systems Exchange Data
HL7 v2 is a text message format for events such as admissions and lab results that systems have used for decades; FHIR is the modern standard built on resources and a JSON REST API. New integrations usually choose FHIR, but legacy equipment and labs still require HL7 v2.
Advanced - Networks & office IT4 min
Router and Wi-Fi Security Checklist for a Small Office
Change the router admin password, update firmware, use WPA3 or WPA2-AES, turn off WPS, UPnP and remote admin, put guests on a separate network and regularly review the list of connected devices.
Practice - IT for business4 min
How to Write a Technical Specification: Step-by-Step Guide
A good specification answers five questions: why the product exists, who it is for, what it does, what qualities it needs and how you will know the work is accepted. Write it from user tasks, not from a list of screens.
Practice - Web development4 min
Infinite Scroll vs Pagination vs Load More: Which to Build
For catalogs and search, where people need to find and return, use pagination or Load More with page URLs; infinite scroll suits feeds that people browse without a specific goal.
Practice - SEO3 min
Image SEO: Alt Text, File Names, Formats and Compression
An optimized image has clear alt text, a meaningful file name, a modern format, the right size for the screen, and lazy loading for everything below the first screen.
Practice - DevOps3 min
Initial Ubuntu Server Setup Checklist for Production
On a new server, update the system, create a sudo user with SSH key login, disable root and password logins, enable ufw, set the time, add swap, and install fail2ban and automatic security updates.
Practice - AI & automation4 min
GraphRAG: Using Knowledge Graphs to Improve LLM Answers
GraphRAG builds a graph of entities and relations from your documents and retrieves along its connections, which helps with multi-hop and dataset-wide questions, but indexing is far more expensive and complex than plain vector RAG.
Advanced - Programming4 min
How to Read a Stack Trace and Find the Bug
A stack trace is the chain of calls that led to a crash: find the error type and message, then the first frame from your own code — that is almost always where the fix goes.
Practice - Mobile development4 min
Firebase Analytics vs AppMetrica vs Amplitude: Choosing App Analytics
Firebase Analytics is a free baseline, especially if you already use Google's ecosystem; AppMetrica is a free option popular in the CIS with built-in attribution; Amplitude is the strongest product analytics tool but becomes paid as you grow. Write an event plan first, then pick the tool.
Practice - Marketing & analytics4 min
How to Track Form Submissions with Google Tag Manager
The most reliable method is to have your developer push a dataLayer event after a successful submission and catch it in GTM with a Custom Event trigger. That single trigger then fires tags for GA4, Yandex Metrica and ad pixels.
Practice - Design & UX4 min
Icons in UI Design: Styles, Sizes and Icon Sets
Pick one icon library with one style and stroke weight, use it on a 24 px grid with a fixed scale of 16, 20, 24 and 32 px, and add a text label whenever the meaning is not obvious to everyone.
Practice - Telegram & messengers4 min
Telegram Bot Use Cases for Business by Industry
A bot pays off wherever there is a repeatable flow with clear steps such as ordering, booking, status checks, requests or applications; each industry has two or three of them, and you should start with one.
Basics - E-commerce & CRM4 min
Last-Mile Delivery: Own Couriers, Delivery Services or Pickup Points
In-house couriers give the most control and speed within one city, delivery services give reach and flexible costs, and pickup points or lockers give the lowest cost per order; most stores combine them.
Basics - Security5 min
How to Protect Your Telegram Account from Hijacking
Nearly every Telegram hijacking happens because the owner hands over the login code — on a fake voting site or in a chat with a "friend". Turn on two-step verification with a recovery email, check active sessions regularly and never share a code from Telegram or SMS.
Practice
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