Backend Performance Testing Building BlocksPerformance, Sales, and Weekends Off Are Correlated!Simple Performance GoalsFactors Affecting Application PerformanceKey Performance IndicatorsTypes of Performance TestsTypes of Load PatternsPerformance Testing StepsExercisesStep 1: Define the Target KPIsStep 2: Define the Test CasesSteps 3–5: Prepare the Data, Environment, and ToolsStep 6: Script the Test Cases and Run Them Using JMeterAdditional Testing ToolsGatlingApache BenchmarkFrontend Performance Testing Building BlocksFactors Affecting Frontend PerformanceRAIL ModelFrontend Performance MetricsExercisesWebPageTestLighthouseAdditional Testing ToolsPageSpeed InsightsChrome DevToolsPerformance Testing StrategyKey Takeaways