Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
Working With Several IT Vendors at Once: Multi-Vendor Strategy
A multi-vendor model works when the boundaries between vendors follow clear interfaces (APIs, data contracts), every component has one owner, releases follow a shared calendar, and one person or lead integrator is accountable for the system as a whole.
Advanced - Web development4 min
SEO in Next.js: Metadata, Sitemap, robots.txt and OG Images
In the App Router, SEO is set with the metadata export or generateMetadata, special files sitemap.ts, robots.ts and opengraph-image.tsx, plus a JSON-LD script; for multilingual routes every page needs a canonical URL and hreflang alternates.
Practice - SEO4 min
Local SEO in Uzbekistan: Google Maps, Yandex Maps and 2GIS
People in Uzbekistan search for businesses across three map services — Google, Yandex and 2GIS — so you need complete, verified profiles in all three with identical name, address and phone.
Practice - DevOps4 min
Kubernetes Requests and Limits: How to Size Containers Right
Requests tell the scheduler where a pod fits, limits tell the kernel how much it may use. Set requests from real usage, give memory limits headroom, and treat CPU limits carefully because they cause throttling.
Advanced - AI & automation4 min
How to Write Effective Prompts: Structure, Examples, Templates
A good prompt has five parts: role, context, task, constraints and output format. The more precisely you describe the situation and the result you want, the fewer revisions you need afterwards.
Practice - Programming4 min
Higher-Order Functions: map, filter and reduce Explained
A higher-order function takes or returns another function; map transforms each element, filter keeps the ones that pass a test, and reduce folds a collection into one value.
Basics - Mobile development4 min
Mobile App Onboarding: How to Keep Users After the First Launch
Good onboarding doesn't describe the app — it gets the user to their first real value as fast as possible. Ask for sign-up and permissions when their value is obvious, and measure success by the share of users who complete the key action.
Practice - Marketing & analytics4 min
How to Test Ad Creatives in Meta Ads Without Wasting Budget
Test ideas rather than small tweaks: run 3-5 creatives in a separate test ad set, filter by hook rate and CTR, make the final call on CPA once data accumulates, and move winners into your main campaign.
Practice - Design & UX4 min
Nielsen's 10 Usability Heuristics Explained
Nielsen's heuristics are 10 general principles of usable interfaces: show system status, speak the user's language, allow undo, stay consistent, prevent errors and so on. With them you can find obvious problems in a design within an hour, without user testing.
Basics - Telegram & messengers3 min
How to Moderate a Telegram Group and Stop Spam
Limit what new members can do, turn on join requests checked by a captcha bot, add slow mode and anti-spam filters, and above all publish short rules and appoint moderators who apply them equally to everyone.
Practice - E-commerce & CRM4 min
Mistakes When Launching an Online Store and How to Avoid Them
Most launch failures come not from design but from incomplete product data, payments never tested with real money, unclear delivery rules and clumsy mobile checkout, all of which a pre-launch checklist catches.
Practice - Security4 min
How to Build a Secure Password Reset and Account Recovery Flow
Send a random, single-use, short-lived token stored only as a hash, give the same response whether or not the account exists, rate-limit requests, end all sessions after the reset and never let recovery silently bypass 2FA.
Practice - Databases & data4 min
SQL INSERT, UPDATE and DELETE: How to Change Data Safely
INSERT adds rows, UPDATE changes them and DELETE removes them; to change data safely, preview the WHERE clause with SELECT, run the change inside a transaction and check the affected row count before COMMIT.
Basics - Hosting & cloud3 min
Serverless Cold Starts: Why They Happen and How to Reduce Them
A cold start is the delay of creating a new function instance: loading code, starting the runtime and running init; reduce it with lighter runtimes, small bundles, lazy init, provisioned concurrency and edge runtimes.
Advanced - IT careers3 min
Live Coding Interview: How to Solve Problems Under Pressure
In a live coding interview, first clarify the problem and examples, narrate your reasoning, write a simple working solution, test it on edge cases and only then optimize.
Practice - Tools & no-code4 min
Obsidian vs Notion: Choosing a Personal Knowledge Base
Obsidian keeps notes as local Markdown files and is best for a private, offline-first personal knowledge base, while Notion is a cloud workspace with databases and real-time collaboration that fits teams and shared wikis better.
Basics - IT by industry4 min
KYC and AML: How Digital Customer Onboarding Works
KYC confirms that a customer is who they claim to be, and AML checks whether they pose a money-laundering risk; remote onboarding chains document capture, a liveness and face match, sanctions screening and a risk score into one automated flow.
Basics - Networks & office IT4 min
What Is DHCP and How Devices Get an IP Address
DHCP is a service, usually on the router, that automatically gives each device an IP address, gateway and DNS for a limited time (a lease); printers, cameras and servers should get fixed addresses through reservations so they never change.
Basics - IT for business4 min
Common MVP Mistakes That Waste Startup Budgets
MVP budgets rarely burn on code itself; they burn on extra features, untested assumptions and scaling before demand is proven. An MVP should test one hypothesis and measure the result.
Practice - Web development4 min
Next.js or Plain React with Vite: Which Do You Need
If your pages must rank in search and open fast on the first visit, pick Next.js; if it is an app behind a login with no SEO needs, React with Vite is simpler and cheaper to maintain.
Basics - SEO3 min
What Are Long-Tail Keywords and Why They Bring Customers
Long-tail keywords are longer, specific phrases that few people search individually. Each brings little traffic, but together they deliver many visitors who already know what they want, and they are easier to rank for.
Basics - DevOps4 min
Kubernetes vs Docker Swarm: Which Orchestrator to Choose
Docker Swarm is simpler and faster to adopt for small projects on a few servers, while Kubernetes is worth its complexity when you run many services, need flexible autoscaling and have people to operate it.
Basics - AI & automation4 min
How to Write a System Prompt for an AI Assistant or Chatbot
A good system prompt answers six questions: who the assistant is, what it does and does not do, how it speaks, what it avoids, when it calls a human and what format it uses. Write it like onboarding notes for a new employee — specific, with examples and free of contradictions.
Practice - Programming3 min
Mocks, Stubs and Fakes: How to Isolate Code in Tests
A test double stands in for a real dependency: a stub returns canned data, a mock verifies calls, a fake is a simplified working implementation. Replace only what is slow or external.
Practice
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