144 articles
A login form can verify the right password and still leave the account resting on a weak session. The difficult part begins after authentication: how does the application recognize the next request, how long should that…
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A browser test passes on a laptop, fails in continuous integration, and passes again when retried. Is the application broken, is the test impatient, or did an …
A home server can keep answering HTTP requests while one of its drives is quietly accumulating errors. That creates a practical question: can SMART warn us ear…
A file upload form looks like a small feature: receive a file, move it into a directory, and save its name. The difficult question begins one step later. Which…
A webhook endpoint can look almost trivial: accept an HTTP POST, decode some JSON, update a record, and return 200. The difficult question appears when any ste…
A small web application can execute two database statements successfully hundreds of times and still have a serious design gap. What happens when the first sta…
The first SSH connection to a server often pauses before asking for a password or using a user key. It shows a fingerprint and asks whether the host should be …
A personal website can feel fast on a second visit for a simple reason: the browser may already have some of its files. But the same mechanism can also keep an…
A home server rarely stays simple for long. It starts with one web server, then a database joins, then a tunnel, then a monitoring agent, and before you know i…
A personal domain may send a password reset through a web host, a contact-form reply through a mailbox provider, and a newsletter through a third service. To a…
