What is the Google-recommended way of calculating this SLI?

You support a high-traffic web application and want to ensure that the home page loads in a timely manner. As a first step, you decide to implement a Service Level Indicator (SLI) to represent home page request latency with an acceptable page load time set to 100 ms.

What is the Google-recommended way of calculating this SLI?
A . Buckelize Ihe request latencies into ranges, and then compute the percentile at 100 ms.
B . Bucketize the request latencies into ranges, and then compute the median and 90th percentiles.
C . Count the number of home page requests that load in under 100 ms, and then divide by the total number of home page requests.
D . Count the number of home page requests that load in under 100 ms. and then divide by the total number of all web application requests.

View Answer

Answer: C

Explanation:

https://sre.google/workbook/implementing-slos/

In the SRE principles book, it’s recommended treating the SLI as the ratio of two numbers: the number of good events divided by the total number of events. For example: Number of successful HTTP requests / total HTTP requests (success rate)