Grokking System Design Fundamentals
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Ricardo Franco
What is the difference between Availability and Reliability?

Ricardo Franco

Nov 23, 2023

Quote from the DNS chapter:

In short, DNS load balancing and high availability techniques, such as round-robin DNS, geographically distributed servers, anycast routing, and CDNs, help improve the performance, reliability, and availability of websites and web services by distributing the load among multiple servers and reducing latency for end-users.

It says DNS helps improve the reliability and availability of a system. But what is the difference between them?

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Design Gurus
Design Gurus2 years ago

In short, availability ensures that your system is always ready for use, while reliability ensures that the system operates correctly and dependably.

For more details: [https://www.designgurus.io/answers/detail/What-is-the-difference-between-Availability-and-Reliabil...

K
kazinik.d a year ago
  • Reliability refers to the system's ability to function correctly and consistently without failure. A reliable distributed system ensures that requests are processed accurately, and data remains intact across nodes.
  • Availability refers to the system's ability...

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