Short, precise explanations of backend, system design and AI — the things that come up in interviews and break in production.https://owltheengineer.com/https://owltheengineer.com/posts/cookie-flags/https://owltheengineer.com/posts/cookie-flags/Three attributes decide whether your cookie is sent at all. Here's what each one does, and why yours is missing.Sun, 30 Aug 2026 00:00:00 GMTcookiessecurityauthhttphttps://owltheengineer.com/posts/sessions-vs-jwt/https://owltheengineer.com/posts/sessions-vs-jwt/One is a pointer, the other is a copy. Almost every argument about them comes from missing that one line.Sat, 29 Aug 2026 00:00:00 GMTauthsecurityjwtsessionshttps://owltheengineer.com/posts/what-is-an-api/https://owltheengineer.com/posts/what-is-an-api/Not the definition. The four things you actually send, what each one is for, and how to find the one that's wrong.Fri, 28 Aug 2026 00:00:00 GMTapihttprest