[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"cheat-sheet---en":3,"domain-info---en":3,"topic-info----en":3,"prev-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-compute-and-storage-performance-ebs-performance-optimization-en":4,"lesson-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-compute-and-storage-performance-ebs-performance-optimization-en":20,"next-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-compute-and-storage-performance-ebs-performance-optimization-en":31},null,{"locked":5,"reason":6,"meta":7,"item":3},true,"paywall",{"title":8,"description":9,"isFree":10,"estimatedMinutes":11,"difficulty":12,"learningObjectives":13},"EC2 Placement Groups and Network Performance","Why a 25 Gbps instance moves 5 Gbps on one connection, how network I/O credits and ENA allowance counters explain throttling that CloudWatch hides, and which placement group strategy each workload needs.",false,24,"intermediate",[14,15,16,17,18,19],"Distinguish single-flow bandwidth from aggregate bandwidth and predict which limit a workload will hit","Explain how network I/O credits give smaller instances burst bandwidth above their baseline","Use the ENA allowance counters to identify throttling that CloudWatch instance metrics do not show","Compare cluster, partition, and spread placement groups, including their hard limits","Select the correct placement strategy for a given availability or latency requirement","Diagnose an insufficient capacity error when launching into a placement group",{"locked":5,"reason":6,"meta":21,"item":3},{"title":22,"description":23,"isFree":10,"estimatedMinutes":24,"difficulty":12,"learningObjectives":25},"EBS Performance Optimization","Pick the right EBS volume type, read the credit and exceeded-check metrics that explain slow storage, and tell the difference between a volume that is throttled and an instance that is.",28,[26,27,28,29,30],"Explain how I/O size connects IOPS to throughput, and why a volume can hit one limit while the other is idle","Compare gp2, gp3, io1, io2 Block Express, st1, and sc1 on their performance ceilings and provisioning models","Calculate the burst duration of a gp2 volume from its size and credit balance","Determine from CloudWatch metrics whether the volume or the instance is the constraint","Modify a live volume's size, type, IOPS, and throughput with Elastic Volumes, and state the limits on doing so",{"locked":5,"reason":6,"meta":32,"item":3},{"title":33,"description":34,"isFree":10,"estimatedMinutes":35,"difficulty":12,"learningObjectives":36},"S3 Performance and Data Transfer","Read S3 request rates and 503 Slow Down responses correctly, speed up transfers with prefixes, byte-range fetches, and multipart uploads, and choose between Transfer Acceleration, DataSync, and Snow devices.",26,[37,38,39,40,41,42],"Explain the per-prefix request rate limits and what a 503 Slow Down response actually indicates","Apply horizontal scaling, byte-range fetches, and aggressive retries to raise S3 throughput","State the multipart upload limits and configure a lifecycle rule for incomplete uploads","Decide when S3 Transfer Acceleration helps and when it does nothing","Choose between Transfer Acceleration, AWS DataSync, and Snow devices for a given transfer requirement","Use S3 Lifecycle configuration to match storage class to access pattern"]