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Uptime looks simple until you have to explain it after an incident. A service shows “99.9%,” customers are upset, and someone asks how many minutes were actually down. Without a clear method, the number creates more confusion than clarity. This guide breaks uptime into something you can calculate, defend, and repeat. It covers the basic […]

Website downtime rarely comes from a single, dramatic failure. More often it’s a small change that cascades: a bad deploy, an expired certificate, a resource limit quietly hit, or a dependency that stops responding. The result is the same, users see errors, and teams scramble for answers. This article breaks down the most common causes […]

Open source monitoring tools promise control and flexibility, but the tradeoffs show up fast. Setup takes longer than expected, alerts need tuning, and ownership shifts to your team the moment something breaks at three a.m. Picking the wrong tool can slow response instead of improving it. This article reviews widely used open source monitoring options […]

On November 18th, 2025, a large Cloudflare outage briefly broke big chunks of the internet. For several hours, users around the world were greeted with 500 errors, including platforms like X, ChatGPT, Spotify, and many others that run behind Cloudflare’s network. At UptimeRobot, we sit in a slightly unusual spot during events like this: So […]

In this special Q&A session, the UptimeRobot community team sat down with Tomas Koprusak, CPO at Itrinity and the product development team to discuss the most requested features and upcoming improvements. Based on community feedback following the mobile application launch, we cover three critical topics: tiered alerting, status page enhancements, and API improvements. Prefer to […]

At UptimeRobot, we love hearing how creators and founders use our tools to keep their projects running smoothly. This week, we’re shining a light on Hardcover.app, a fast-growing, community-driven alternative to Goodreads that’s helping readers connect, track their books, and share their literary journeys. We caught up (async!) with Adam Fortuna, founder of Hardcover, to […]