Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
Freelancer or Development Agency: Who to Hire for Your Project
Hire a freelancer for small, well-defined tasks with an easy-to-check result; choose an agency when the project needs several roles, deadlines, guarantees and support after launch.
Basics - Web development4 min
Cross-Browser Compatibility: How to Test and Fix a Website
Cross-browser compatibility means agreeing on a list of target browsers, letting tools add prefixes and polyfills for that list, and testing the key user flows on real Safari, Android and in-app WebViews such as Telegram.
Practice - SEO3 min
What Is E-E-A-T and How Google Evaluates Content Quality
E-E-A-T is Google's framework for judging content quality through experience, expertise, authoritativeness and trust; it is not a single ranking factor but a set of signals a site shows through authors, sources and transparency.
Basics - DevOps3 min
Docker Compose Guide: Running Multi-Container Apps Locally
Docker Compose describes all of a project's containers in one YAML file and starts them with a single docker compose up. Services reach each other by name, data lives in volumes, settings in .env.
Practice - AI & automation4 min
AI Resume Screening for HR: Setup, Bias and Limits
An LLM is useful for extracting facts from CVs and matching them to predefined criteria with an explained score, but not for automatic rejection: a recruiter makes the decision, and candidate data is processed with consent and kept to a minimum.
Practice - Programming4 min
Dates and Time Zones in Code: UTC, ISO 8601 and Common Bugs
Store instants in UTC, exchange them as ISO 8601 strings with an offset, and convert to local time only when displaying to a user, using an IANA zone such as Asia/Tashkent.
Practice - Mobile development3 min
Deep Links in Mobile Apps: Universal Links and App Links Setup
For reliable deep links, use regular https links verified by a file on your domain: Universal Links on iOS and App Links on Android. Keep URI schemes like myapp:// as a fallback.
Practice - Marketing & analytics4 min
How to Plan a Digital Marketing Budget and Split It by Channel
Build the budget from the goal: how many customers you need, how many leads that takes and what customer acquisition cost (CAC) the business can afford; most money goes to proven channels, some to tests, plus a reserve for creatives and analytics.
Practice - Design & UX4 min
Data Table UI Design: Sorting, Filtering and Row Density
A usable table helps people compare and act fast: numbers right-aligned, text left-aligned, key columns first, a sticky header, adjustable density, and rows that turn into cards on mobile.
Practice - Telegram & messengers4 min
Local Telegram Bot API Server: When and How to Run Your Own
A local Bot API server lets a bot upload files up to 2 GB, read downloaded files straight from disk and accept far more webhook connections; the price is that you build, update, secure and monitor it yourself.
Advanced - E-commerce & CRM4 min
Common CRM Implementation Mistakes and How to Avoid Them
CRM projects usually fail because of organization, not software: the process is not mapped, records are overloaded with fields, the team is not trained and managers do not run the business from CRM data. Each of these can be fixed before launch or in the first weeks.
Practice - Security4 min
Encryption at Rest vs in Transit: What Each Protects Against
Encryption in transit (TLS) protects data while it moves across a network; encryption at rest protects it on disks, in databases and backups. You need both, but neither stops an attacker who breaks into the application itself.
Basics - Databases & data4 min
The N+1 Query Problem: How to Detect and Fix It
N+1 happens when code runs one query for a list and then one more query per item; you fix it by loading related data up front in one or two queries with eager loading, JOINs or batching.
Practice - Hosting & cloud4 min
How to Deploy a Docker Container to Google Cloud Run
Build an image that listens on the port from the PORT variable, push it to Artifact Registry and run gcloud run deploy; Cloud Run starts the containers, gives you an HTTPS URL and scales from zero, and you pay mainly for the time spent handling requests.
Practice - IT careers4 min
First 90 Days at a New Developer Job: How to Pass Probation
To pass probation, use the first month to learn the environment, domain and your manager's expectations, the second to deliver tasks steadily and learn from the team, and the third to own a visible task end to end and show the result.
Practice - Tools & no-code4 min
Text Functions in Excel: Split, Join and Clean Data
Clean text first with TRIM, CLEAN and SUBSTITUTE, then split it with TEXTSPLIT or LEFT/MID/RIGHT and join it with TEXTJOIN; for one-off jobs Flash Fill (Ctrl+E) does the same by example.
Practice - IT by industry4 min
Cloud POS vs Traditional POS: Pros and Cons
A cloud POS wins when remote access, several locations and a fast start matter; a traditional POS wins when connectivity is unreliable, data must stay in-house and hardware integrations are complex.
Basics - Networks & office IT4 min
How to Set Up a Separate Guest Wi-Fi Network in the Office
Create a separate SSID in its own VLAN that can reach only the internet, enable client isolation, limit bandwidth per guest, rotate the password regularly or share it via QR code, and test that internal addresses are unreachable.
Practice - IT for business3 min
Going Paperless: How to Digitize Company Workflows
Go step by step: internal documents and approvals first, then e-signatures and exchange with partners, and the archive last; check legal requirements and train staff at every stage.
Practice - Web development3 min
CSR vs SSR vs SSG vs ISR: Rendering Strategies Explained
The difference is where and when HTML is built: in the browser (CSR), on the server per request (SSR), once at build time (SSG), or at build time with periodic updates (ISR). Content sites fit SSG and ISR, personal pages fit SSR, private panels fit CSR.
Basics - SEO3 min
Entity SEO: How to Get Into Google's Knowledge Graph
Google builds its Knowledge Graph from consistent facts about an entity across trusted sources, so entity SEO means making your brand unambiguous: Organization markup with sameAs, identical data everywhere and mentions in reliable places.
Advanced - DevOps4 min
Running Docker Compose in Production on a Single VPS
Docker Compose on a single VPS is fine for production if you set restart policies, healthchecks, log rotation, HTTPS via a reverse proxy, regular off-site volume backups and a clear update procedure.
Practice - AI & automation4 min
AI Sales Assistant: Automating Lead Qualification and Replies
An AI sales assistant learns a customer's need, budget and timeline in a few messages, scores the lead, saves everything to the CRM and passes hot leads to a manager, while never promising anything outside the approved rules.
Practice - Programming4 min
How to Debug Code: A Systematic Step-by-Step Approach
Debugging is not guessing but a loop: reproduce the bug reliably, narrow down where it happens, form one hypothesis, test it against facts, then lock in the fix with a test.
Practice
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