An e-commerce site expects traffic to triple during upcoming flash-sale events. To ensure that web pages still meet the response-time SLA, which part of the performance requirements should the cloud architect validate first?
CPU and memory utilization thresholds on the web-tier instances
TLS certificate encryption-key length used for HTTPS
CPU and memory utilization (capacity) thresholds show how close the front-end instances are to saturation. If utilization is already high, adding more concurrent users will push the service past those thresholds and slow response times unless auto-scaling or additional capacity is configured. Encryption key length, backup-retention schedules, and audit-logging cadence are important for security and operations but do not directly indicate whether the servers can handle higher real-time load.
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What are resource capacity thresholds?
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How can resource capacity thresholds be monitored?
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What are some strategies to handle exceeded resource capacity thresholds?