Gift of powerful monitoring bestowed upon the land of open source.

We have multiple services offered to users and actively planning to integrate all of them under a single domain. All of them will be accessible only after one acquires a license with a subscription. The problem is this individual system is developed using various technologies. We needed a central system to monitor health, uptime, and resource consumption. Prometheus was a worthy contender, along with Apache Cassandra. We embedded it in a PHP app using a third-party library. Using API & graphana, we built a dashboard with only needed metrics. it was near real-time, and I would recommend it to anyone who is purely looking for monitoring only. But it was missing some API calls, so if you're charging someone based on usage of your API, I'd say please look for another service. Apart from this, promotion is a really capable language. Setup is not that easy if you're a newbie. We can't complain much because it didn't cost us a dime as it is open source. Also, it's light on hardware and does not bring memory munching processes. We also use it to monitor some PHP-level queue jobs, and it registers each queue execution perfectly.