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A couple of good things to remember here: #1 resolving 1 bottleneck can open another bottleneck that is much worse. #2 is to understand that not all API’s are created equal. Additionally the configuration and setup that works well on one system may not work well on another. Because of this people often leave lots of performance on the table. Don’t just trust that your current API or config is optimal, test and make sure it fits your application.