Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT careers4 min
Who Is a Business Analyst in IT: Tasks, Skills and How to Start
An IT business analyst finds out which business problem a product must solve and turns it into requirements the team can build; to start, you need strong questioning, structured writing and process modeling skills.
Basics - Tools & no-code4 min
Debugging in VS Code: Breakpoints and launch.json
VS Code debugging is configured in .vscode/launch.json: a launch configuration starts your program under the debugger, an attach configuration connects to a process that is already running; then you set breakpoints, conditional if needed, and inspect variables, the call stack and watch expressions.
Practice - IT by industry4 min
Predictive Maintenance: Using IoT Sensors to Prevent Breakdowns
Predictive maintenance puts sensors on critical equipment, streams their readings to a model that learns normal behavior and flags deviations early, so you repair machines when they actually need it rather than by calendar or after failure.
Advanced - IT for business3 min
SaaS Pricing Models: How to Choose the Right One
Your pricing should grow with the value the customer gets: per seat if value lies in the team, usage-based if it lies in volume, tiered if customers differ widely in their needs.
Practice - Web development4 min
REST API Design Best Practices: Naming, Versioning, Errors
A good REST API is predictable: plural nouns in URLs, uniform pagination and filter rules, an explicit version, one error format across all endpoints and idempotency keys for operations that must not be repeated.
Practice - SEO3 min
Google Penalties and Yandex Filters: How Sites Get Sanctioned
A site loses rankings either through a manual action that the search engine reports in its webmaster panel, or through an algorithm that silently demotes spam, paid links and over-optimized text. Check Search Console and Yandex Webmaster first, then match the drop date to your own changes.
Basics - DevOps3 min
PM2 Guide: Running Node.js Apps in Production
PM2 keeps a Node.js app running, restarts it on crashes, spreads load across CPU cores in cluster mode and brings processes back after a server reboot.
Practice - AI & automation3 min
OCR for Uzbek and Russian Documents: Latin, Cyrillic, Mixed
There is no universal winner: take 50-100 of your real documents, run them through 2-3 engines and a vision LLM, measure character and field errors, and pick the setup that fits your document types.
Practice - Programming4 min
Rust Ownership and Borrowing Explained
Every Rust value has one owner; it can be moved or borrowed — many times for reading or once for writing — and a reference can never outlive the value itself.
Advanced - Mobile development4 min
Storing Sensitive Data in Mobile Apps: Keychain and Android Keystore
Keep tokens and keys in the iOS Keychain and under Android Keystore protection, not in SharedPreferences, UserDefaults or AsyncStorage. Tie biometrics to a cryptographic key rather than a yes/no check, and remember that a secret shipped inside the app is not a secret.
Advanced - Marketing & analytics4 min
What Is a Sales Funnel and How Does It Work
A sales funnel is the sequence of steps a person goes through from first hearing about you to buying again; at each step some people leave, and measuring conversion between steps shows exactly where to improve.
Basics - Design & UX4 min
What Is a User Persona and How to Create One
A user persona is a short, realistic profile of a typical user group built from research: their goals, context, behaviour and obstacles. It is useful only when it changes decisions, so keep it focused on needs and pain points rather than decorative biography.
Basics - Telegram & messengers4 min
How to Set Up WhatsApp Business: Profile, Catalog and Auto-Replies
Install WhatsApp Business on a work number, fill in the profile and catalog, turn on greeting and away messages, create quick replies and labels, and share a wa.me short link with a QR code.
Practice - E-commerce & CRM3 min
How to Integrate Stripe Into an Online Store
For most stores Stripe Checkout, a hosted payment page, is the simplest choice; Payment Element is for payments inside your own design, and order status should only change on a webhook.
Practice - Security4 min
What Is a DDoS Attack and How It Takes Websites Down
A DDoS attack is a flood of traffic from thousands of compromised devices that saturates your bandwidth, network equipment or the application itself, so the site stops responding to real users. The defense is filtering traffic before it reaches your server: CDN, anti-DDoS and rate limiting.
Basics - Databases & data4 min
What Is Database Replication and Why It Matters
Replication continuously copies changes from a primary database to one or more replicas, so you can spread read load and switch to a replica if the primary fails. It protects against server failure, not against mistakes: a deleted table is deleted on every replica too, so you still need backups.
Basics - Hosting & cloud4 min
How to Choose Hosting for a WordPress Site
WordPress hosting should support current PHP and MySQL or MariaDB versions, offer page and object caching, a staging copy and automatic off-server backups. Managed WordPress saves maintenance time, while regular hosting or a VPS gives more control.
Practice - IT careers3 min
Who Is a Data Analyst: Tasks, Skills and Career Prospects
A data analyst turns raw data into answers to business questions: collecting and cleaning data, calculating metrics and explaining what they mean. The core toolkit is SQL, spreadsheets, visualization and business understanding rather than complex machine learning models.
Basics - Tools & no-code4 min
Best VS Code Extensions for Web Developers
A web developer needs one extension per job — ESLint, Prettier, GitLens, the Docker or Dev Containers extension, a REST client and an AI assistant — configured per project in .vscode and checked regularly so the editor stays fast.
Practice - IT by industry4 min
Product Traceability: Batch and Serial Tracking in Production
Traceability is a chain of records showing which raw material lots went into which product lot and to whom it was shipped, captured by scanning labels at every step and stored in ERP, MES or WMS.
Practice - IT for business4 min
Scrum for Business Owners: Sprints, Roles and Meetings
Scrum means working in short sprints with clear roles and meetings; as a business owner, the most important things are attending the sprint review and having your own Product Owner.
Basics - Web development4 min
REST vs GraphQL: Which API Style to Choose
REST is simpler, caches better and fits most public and CRUD APIs; GraphQL wins with many different clients and complex screens with nested data, but demands more discipline on the server.
Basics - SEO3 min
Search Intent: What It Is and How to Match It
Search intent is the goal behind a query: to learn, to reach a specific site, to compare or to buy. To rank, a page has to match that goal in format, not just in keywords.
Basics - DevOps4 min
DevOps Checklist Before Launching a Project to Production
Before launch, make sure deploys are automated and repeatable, problems trigger alerts to a named person, logs are searchable, backups have been restored at least once, there is capacity headroom, a rollback takes minutes, and common incidents have written runbooks.
Practice
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