Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
How to Communicate With Developers If You Are Not Technical
Describe a task through its goal and an example rather than a technical solution; report a bug with steps, expected and actual results and a screenshot; ask what an estimate consists of and what risks it includes.
Practice - Web development3 min
How to Add Dark Mode to a Website the Right Way
Define colors as CSS variables, follow the system theme via prefers-color-scheme by default, store the user's choice in localStorage and apply it with a tiny script in the head before the page paints.
Practice - SEO4 min
What Are Google Core Updates and How to Respond to Them
A core update is a broad change in how Google assesses page quality overall; it does not punish one site, it re-evaluates everyone. If traffic drops alongside an update, do not panic — improve how genuinely useful your content is, and expect results to take time.
Basics - DevOps3 min
Dockerfile Best Practices: Writing Fast and Clean Images
A good Dockerfile copies dependency files before the code, uses a compact base image with a pinned version, excludes clutter via .dockerignore and runs the app as a non-root user.
Practice - AI & automation3 min
How to Anonymize Personal Data Before Sending It to AI
Before sending text to AI, detect personal data (names, phones, passports, addresses), replace it with masks or pseudonyms, keep the mapping table on your side, and respect Uzbekistan's data localization rules.
Practice - Programming4 min
Git Branching Strategies: Git Flow, GitHub Flow, Trunk-Based
Git Flow fits infrequent versioned releases, GitHub Flow fits web products deployed often via short branches, and trunk-based suits teams with strong automation and feature flags.
Practice - Mobile development4 min
Home Screen Widgets on iOS and Android: When an App Needs One
A widget shows one up-to-date thing without opening the app and refreshes on the system's terms, not in real time; it is worth building when users have a reason to check often — a status, balance, schedule or progress.
Basics - Marketing & analytics3 min
Engagement Rate vs Bounce Rate in GA4: What Changed and Why
In GA4 a bounce is any session that was not engaged, and an engaged session lasts over 10 seconds, has a key event or has two or more page views; so GA4 bounce rate is simply the inverse of engagement rate.
Basics - Design & UX4 min
Design Handoff to Developers With Figma Dev Mode
Good handoff starts before Dev Mode: name layers and components, build with auto layout and variables, design every state, mark assets for export and annotate behavior; then developers open ready sections in Dev Mode and read sizes, spacing, tokens and notes directly.
Practice - Telegram & messengers4 min
Telegram Bot API Limits: Rate Limits, File Sizes and Messages
Telegram advises at most 1 message per second per chat, 20 per minute per group and about 30 per second overall; bots download files up to 20 MB, upload up to 50 MB, send text up to 4096 characters, and exceeding the rate returns a 429 error with retry_after.
Basics - E-commerce & CRM4 min
Key E-commerce Metrics: AOV, LTV, CAC and Repeat Purchase Rate
AOV shows what one order brings, LTV what gross profit a customer brings over time, CAC what it costs to acquire them, and repeat rate whether people come back; a store grows sustainably when LTV is clearly above CAC.
Basics - Security4 min
How to Recognize Phishing Emails, Sites and Messages
Phishing almost always gives itself away with urgency, a link or attachment you must open right now and an address that only looks like the real one. One rule covers most cases: do not follow the link in the message — open the service yourself or call a number you already know.
Basics - Databases & data4 min
How to Migrate from MySQL to PostgreSQL
Migrating from MySQL to PostgreSQL is more than copying data: first audit types and application queries, then move the data with pgloader to a test environment, validate it, and only after a rehearsal switch the app over in a short window with a rollback plan.
Practice - Hosting & cloud4 min
Common SSL Errors and How to Fix Them
Nearly every SSL problem comes down to five causes: the certificate expired, does not cover the site name, is served without its intermediate chain, the page loads resources over HTTP or HTTP and HTTPS redirect to each other in a loop.
Practice - IT careers4 min
How Much Math Do You Need to Become a Programmer
Web, mobile and most backend work need school-level math, logic and basic discrete math; serious math is required in gamedev, data science and ML — and you can learn it as the need arises.
Basics - Tools & no-code4 min
IMPORTRANGE and ARRAYFORMULA in Google Sheets
IMPORTRANGE pulls a range from another Google Sheet and ARRAYFORMULA applies one formula to an entire column; together they replace manual copying, as long as you import once, keep ranges bounded and avoid long chains of files.
Practice - IT by industry4 min
Dental Clinic Software: Features to Look For
A dental clinic needs more than a generic medical CRM: look for a dental chart, treatment plans, X-ray storage, chair-based scheduling and materials write-off, and compare systems on your real workflows.
Basics - Networks & office IT4 min
Internet Speed Explained: Mbps, Ping, Jitter and Packet Loss
Mbps shows how much data passes per second, ping shows delay, jitter shows how unstable that delay is, and packet loss shows how much data never arrives; calls need stability, file transfers need bandwidth.
Basics - IT for business3 min
How to Compare Development Estimates from Different Vendors
Estimates differ because vendors understood the task differently. Put them in one table by feature and stage, mark the gaps, and compare scope first, total price second.
Practice - Web development3 min
End-to-End Testing for Web Apps: Playwright vs Cypress
E2E tests check key user journeys end to end in a real browser. Playwright is stronger in cross-browser support, parallelism and multiple tabs; Cypress shines in interactive debugging. For new projects Playwright is the more common pick.
Practice - SEO4 min
Google Discover: How to Get Content Into the Feed
You cannot target Discover with a query: Google recommends content based on user interests, so you need indexed quality pages, large images with max-image-preview:large and regular fresh content without clickbait.
Advanced - DevOps4 min
DORA Metrics Explained: How to Measure DevOps Performance
DORA metrics measure delivery with four numbers: how often you deploy, how fast a commit reaches production, how often changes break production and how quickly you recover; together they show both speed and stability.
Basics - AI & automation4 min
How to Build a RAG Chatbot on Your Company Documents
A RAG chatbot finds the passages in your documents that match a question and hands them to an LLM, which answers only from them and cites the source. Quality depends on clean data, good chunking and access control applied at retrieval time.
Practice - Programming4 min
Essential Git Commands: A Cheat Sheet for Daily Work
Daily Git work needs only about twenty commands, such as clone, status, add, commit, switch, merge, pull, push, log and diff, plus a well-configured .gitignore file.
Practice
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