PERF08-BP03 Identify how tradeoffs impact customers and efficiency
When evaluating performance-related improvements, determine which choices will impact your customers and workload efficiency. For example, if using a key-value data store increases system performance, it is important to evaluate how the eventually consistent nature of it will impact customers.
Identify areas of poor performance in your system through metrics and monitoring. Determine how you can make improvements, what trade-offs those improvements bring, and how they impact the system and the user experience. For example, implementing caching data can help dramatically improve performance but requires a clear strategy for how and when to update or invalidate cached data to prevent incorrect system behavior.
Common anti-patterns:
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You assume that all performance gains should be implemented, even if there are tradeoffs for implementation such as eventual consistency.
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You only evaluate changes to workloads when a performance issue has reached a critical point.
Benefits of establishing this best practice: When you are evaluating potential performance-related improvements, you must decide if the tradeoffs for the changes are consistent with the workload requirements. In some cases, you may have to implement additional controls to compensate for the tradeoffs.
Level of risk exposed if this best practice is not established: High
Implementation guidance
Identify tradeoffs: Use metrics and monitoring to identify areas of poor performance in your system. Determine how to make improvements, and how tradeoffs will impact the system and the user experience. For example, implementing caching data can help dramatically improve performance, but it requires a clear strategy for how and when to update or invalidate cached data to prevent incorrect system behavior.
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