Blog

Articles on monitoring websites and services, and on how we build Uptime.

Guide3 min read

Keeping many monitors in order: tags and groups

Beyond two dozen monitors the list gets hard to read. How a few clear tags bring order, and how they show you faster where to look during an incident.

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In practice1 min read

In practice: when an express promise depends on the website

A metal and building-materials trader promises delivery in the shortest time. Which paths it monitors so the promise holds when nobody is looking.

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In practice2 min read

In practice: one developer, five projects, one overview

Anyone who looks after several client projects needs one place that says what is running. How to keep five very different applications in view with a handful of monitors.

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Engineering3 min read

Why a monitoring service must not check internal addresses

A monitor calls addresses that customers enter, from our server. That is useful and dangerous at the same time. How Uptime protects itself against SSRF.

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Engineering2 min read

Two-factor sign-in and “remember this browser”

An authenticator app protects your account on top of the email code. How “remember this browser for 30 days” works and why it is deliberately limited.

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Engineering2 min read

Uptime in 13 languages: more than translating

From language URLs to plural forms to Arabic and Urdu written right to left: what it takes to make an interface truly multilingual.

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Guide1 min read

How often should you check a website?

The check interval decides how soon you hear about an outage and how many false alarms you get. Here is how to pick the right value.

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Guide1 min read

What an uptime check sees – and what it does not

HTTP, TCP, ping and DNS answer different questions. Knowing what a check really measures helps you choose the right monitor.

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Engineering1 min read

Why Uptime does without passwords

At Uptime you sign in with a code by email. Why we built it that way, and what you should still look out for.

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