The principles of extreme fault tolerance
PlanetScale emphasizes its extreme fault tolerance through foundational principles and a robust architecture. The system is designed to isolate failures and ensure redundancy, allowing continued operation even during issues. Their processes, including automatic failovers and synchronous replication, further enhance reliability and minimize disruptions for customers.
- ▪PlanetScale utilizes a shared nothing architecture to enhance speed and reliability.
- ▪The system's fault tolerance is based on principles such as isolation, redundancy, and static stability.
- ▪Automatic failovers and synchronous replication are key processes that reinforce the system's overall fault tolerance.
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| Original publisher | Planetscale |
| Canonical URL | https://planetscale.com/blog/the-principles-of-extreme-fault-tolerance |
| Publication time | Sun, 24 May 2026 22:22:29 +0000 |
| Retrieval time | 2026-05-24T22:37:34.934Z |
| Last seen | 2026-05-24T22:37:34.934Z |
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The principles of extreme fault toleranceMax Englander | July 3, 2025PlanetScale is fast and reliable. Our speed is the best in the cloud due to our shared nothing architecture that enables us to utilize local storage instead of network-attached storage. Our fault tolerance is built on top of principles, processes, and architectures that are easy to understand, but require painstaking work to do well.We have talked about our speed a lot. Let's talk about why we are reliable.PrinciplesOur principles are neither new nor radical. You may find them obvious. Even so, they are foundational for our fault tolerance.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Planetscale.
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