Technical notes drawn from real projects: frontend, backend, AI, security, SEO, media and mobile apps.
Typed python and got the Microsoft Store? How to install Python 3.15, use uv for a private environment per project, run your first script and fix common Windows and macOS problems.
Beginner
Copying three branches' numbers by hand takes an hour each month. A small Python program merges Excel files, builds the report and sends the email in seconds, tested safely with a fake mailbox.
Beginner
When every system keeps its own stock copy, one is always wrong. Build a small FastAPI service, validate input with Pydantic, watch the docs appear by themselves and try it with curl.
Beginner
One last speaker, three orders at once. Why stock drifts apart, five ways to handle it from manual work to API links, and where to start.
Intermediate
House address, plot of land, door lock and mailbox: four web concepts explained with everyday examples, how to choose, and two common mistakes, a forgotten domain renewal and email in spam without SPF, DKIM and DMARC.
Beginner
Conventions that keep your API from breaking other people's apps: path naming, one shape for errors, cursor paging, versioning, protection against duplicate orders, and call limits.
Intermediate
Use EXPLAIN to see what the database plans to do with a slow query, then order index columns correctly, avoid the mistakes that hide an index, and paginate deep without slowing down.
Intermediate
Using Redis as a notebook of saved answers for your API: setting lifetimes, clearing cache safely, stopping a crowd from hitting the database at once, and sharing one Redis between sites.
Intermediate
Store a dozen user permissions in one numeric column, check whether an IP address is in an allowed range, and avoid the traps JavaScript sets when you work with bits.
Intermediate