High availability means guaranteed uptime. If you go viral on Pantheon, you’ll never need to go offline while a server reboots. The platform covers all three of the critical points for high availability:
Achieving redundancy by removing single points of failure
Having reliable cross-over capabilities to switch between components
Detection of failures as they occur, so that cross-over can be initiated
Unlike hosting providers who measure uptime by network availability, Pantheon measures uptime with standards that matter to anyone who runs a mission-critical site. Uptime means your application container is running, it’s reachable on the internet, and it’s connected to the database and any other backing services. Even at these high standards, Pantheon crushes it.
Not only does having one large platform allow us to scale by distributing the load for running websites, but it also ensures resources can be obtained in many places. The same architectural features that give us Pantheon its Smooth Scaling capability also offer world-class redundancy to every site.
High availability depends on safe and reliable crossovers. Pantheon’s systems automation allows complex multi-step processes to take place in precise, auditable order. This allows us to guard against “split brain” failures, cache incoherency, and the other pitfalls of poorly-executed high availability.
Instant Detection of Failure
With more than a million checks run a day at sub-minute frequency, our infrastructure is monitored at a resolution that most DevOps teams can only dream about. When trouble strikes, we’re alerted immediately. In most cases, an automated remediation is programmatically initiated.
No other provider is as transparent about uptime as we are. We publish real-time statistics on site availability. The status page shows uptime across thousands of sites at all service levels running on the Pantheon platform. It’s a true measure of our platform’s reliability, and one we’re proud to make it visible to all.
For customers who need an Enterprise-grade SLA, we'll contractually back your uptime. Three nines or your money back.
How It Works
Find out exactly how the platform gives every site high availability.See Features