Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
Open Source Licenses: What Business Owners Must Know
Permissive licenses (MIT, Apache 2.0) let you use code in a closed commercial product with almost no restrictions. Copyleft licenses (GPL, AGPL) can force you to open your source code, so track them before the product reaches customers or investors.
Basics - Web development4 min
Nuxt vs Next.js: Comparing Meta-Frameworks
Nuxt and Next.js are close in capabilities, so the choice is driven by the library, not the framework: a Vue team picks Nuxt, a React team picks Next.js.
Basics - SEO3 min
What Is Mobile-First Indexing and How to Prepare
With mobile-first indexing, search engines judge your site by its mobile version, so anything missing on mobile, such as text, markup or images, effectively does not exist for rankings.
Basics - DevOps4 min
Linux File Permissions Explained: chmod, chown and Users
Every Linux file has an owner, a group and three sets of read, write and execute permissions for the owner, the group and everyone else; chmod changes permissions and chown changes ownership.
Basics - AI & automation4 min
Passport and ID Recognition for KYC: How It Works
Automated KYC reads the MRZ and visual fields of a document, checks them against each other, confirms a live person matches the photo, looks for signs of forgery and then stores the minimum data needed under strict access rules.
Practice - Programming3 min
Property-Based Testing: Hypothesis and fast-check in Practice
Instead of a few examples you describe a property that holds for any input, and Hypothesis or fast-check generate hundreds of cases and shrink any failure down to a minimal example.
Advanced - Mobile development4 min
Mobile Install Attribution: MMPs, SKAdNetwork and Privacy Limits
Attribution links an install to the ad that drove it. Android still offers the advertising ID and Install Referrer; on iOS, without ATT consent, you get aggregated and delayed SKAdNetwork data. An MMP combines these sources into one report.
Advanced - Marketing & analytics4 min
Meta Lead Ads: How to Set Up Instant Forms and Get Quality Leads
Lead quality from Instant Forms depends on form type, qualifying questions and response speed: use a higher intent form, ask 1-3 questions about the task and push leads to your CRM or Telegram in real time.
Practice - Design & UX4 min
Search and Filter UX: Designing Catalogs Users Can Navigate
A usable catalog has visible search that forgives typos and suggests options, filters based on real product attributes with selected values always visible, and results that never end in a dead end.
Practice - Telegram & messengers4 min
How to Add Telegram Login to Your Website
Create a bot, link your domain to it in BotFather, embed the widget, then on the server verify the hash using the SHA-256 of the bot token and check that auth_date is fresh — only then create a session.
Practice - E-commerce & CRM4 min
Payme vs Click: Which Payment System to Choose for Your Website
Payme and Click do the same job — accepting Uzcard and Humo cards and payments from their own apps — and differ mainly in API design and your customers' habits, so most stores are better off connecting both.
Basics - Security4 min
SMS vs Authenticator App vs Security Key: Which 2FA to Use
SMS is the weakest 2FA because of SIM swaps and interception, an authenticator app is a solid default, and FIDO2 security keys or passkeys are the only common option that resists phishing, so use them for email, admins and finance.
Practice - Databases & data4 min
SQL Query Optimization Checklist
Measure the query with EXPLAIN ANALYZE first, then select only the columns you need, write filters that can use an index, replace OFFSET with keyset pagination and remove N+1 with batched queries.
Practice - Hosting & cloud4 min
Vercel vs Netlify vs Cloudflare Pages: Which to Choose
Vercel is the easiest home for Next.js with server features, Netlify is convenient for static sites and Astro, and Cloudflare is usually cheapest at high traffic because it does not charge for static bandwidth. Your framework and traffic profile make the final call.
Practice - IT careers4 min
Personal Brand for Developers: Blogs, Talks and Open Source
A developer's personal brand is the public evidence of your expertise: articles, talks, a channel and open source code. Pick one format, keep a small regular rhythm, write about real problems from your work, and within a few months people start finding you.
Advanced - Tools & no-code4 min
Postman Collections, Environments and Variables
Group requests into collections with folders, move URLs and tokens into variables like {{baseUrl}}, and create one environment per server, so switching between dev and production takes a single click.
Practice - IT by industry4 min
How Learning Centers Reduce Student Churn With Automation
Churn drops when your CRM spots warning signals such as missed lessons, late payments or falling grades and immediately triggers a touchpoint: a parent message, an admin call or a survey, while managers track retention by group and teacher.
Practice - Networks & office IT4 min
What Is a NAS and Does Your Office Need One
A NAS is a small server with drives that plugs into the office network and shares files with everyone; you need one when the cloud falls short on speed, capacity or control over your data.
Basics - IT for business4 min
Outcome-Based Pricing in IT Contracts: Benefits and Risks
Outcome-based pricing ties the contractor's pay to a measurable business result; it works only when the outcome is measurable, mostly controlled by the contractor and backed by clear attribution and exit rules.
Advanced - Web development4 min
How to Document an API with OpenAPI and Swagger
Describe your API in one OpenAPI file (YAML or JSON), render it with Swagger UI or Redoc, generate clients from it, and check automatically in CI that it still matches the code.
Practice - SEO4 min
Multilingual Website SEO: Subfolders, Subdomains or Domains
For most sites subfolders (/ru/, /en/, /uz/) are the best choice: they share one domain's authority and are easy to maintain. Separate domains make sense when each country is effectively a separate business.
Practice - DevOps4 min
High CPU or Memory on a Linux Server: How to Find the Cause
Start with top or htop to spot the culprit, use vmstat and iostat to tell CPU load from disk waits, and check free and dmesg to see whether memory is short and the OOM killer has fired.
Practice - AI & automation3 min
Automating Invoice and Receipt Processing With OCR and AI
A document pipeline consists of intake, OCR, AI field extraction, rule-based validation and export to the accounting system, and anything the system is unsure about goes to human review.
Practice - Programming4 min
Pure Functions and Immutability: Writing Predictable Code
A pure function returns the same result for the same input and changes nothing outside itself. Combine pure functions with data you never mutate, push side effects to the edges, and most "it changed somewhere" bugs disappear.
Practice
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