# SUS03-BP03 Optimize areas of code that consume the most time or resources
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 Monitor workload activity to identify application components that consume the most resources. Optimize the code that runs within these components to minimize resource usage while maximizing performance. 

 **Level of risk exposed if this best practice is not established:** Low 

## Implementation guidance
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+  Monitor performance as a function of resource usage to identify components with high resource requirements per unit of work as targets for optimization. 
+  Use a code profiler to identify the areas of code that use the most time or resources as targets for optimization. 
+  Replace algorithms with more efficient versions that produce the same result. 
+  Use hardware acceleration to improve the efficiency of blocks of code with long execution times. 
+  Use the most efficient operating system and programming language for the workload. 
+  Remove unnecessary sorting and formatting. 
+  Use data transfer patterns that minimize the resources used based on how frequently the data changes and how it is consumed. For example, push state change information to a client instead of having it consume resources to poll and receive valueless ‘no change’ messages. 

## Resources
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 **Related documents:** 
+  [What is Amazon CloudWatch?](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/WhatIsCloudWatch.html) 
+  [What is Amazon CodeGuru Profiler?](https://docs.aws.amazon.com/codeguru/latest/profiler-ug/what-is-codeguru-profiler.html) 
+  [FPGA instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/fpga-getting-started.html) 
+  [The AWS SDKs on Tools to Build on AWS](https://aws.amazon.com/tools/) 

 **Related videos:** 
+  [Building Sustainably on AWS](https://www.youtube.com/watch?v=ARAitMSIxc8)