Baseline(s).. [Part 1]
Merriam-webster defines baseline "as a line serving as a basis", or you can think of it is a starting point used for comparisons. In site reliability engineering (SRE), establishing a performance baseline for workloads is a common practice. This baseline serves as a reference point for monitoring and also improving system performance over time. In my previous experience as a SRE, particularly in supporting critical e-commerce websites, I learned that it's beneficial to establish more than one baseline for a more holistic view and accurate analysis. I have found two key types of baselines are quite useful: [A] Performance Baseline Influenced by External Factors: This baseline takes into account real-world conditions such as network variability, user device performance, and other external influences. It reflects the performance metrics as experienced by the end-users, providing insights into how these factors impact the user experience. [B] Performance Baseline Detached ...
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