This week we look at chapter 21 Handling Overload and chapter 22 Addressing Cascading Failures of Site Reliability Engineering: How Google Runs Production Systems.

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Overload is the leading cause of cascading failures.

Overload is what happens when a server gets more requests than it can handle. There are basic methods for relieving server overload:

1. make the requests easier to process
2. add more resources
3. reduce the amount of traffic