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Application Performance Metrics

Performance is a key usability and quality metric. Phrases like making fast and improving scalability are vague and subjective and don't make very good performance targets. As a result, the industry has come up with widely accepted terms for quantifying performance:

  • Latency (Response time) - amount of time in ms, required to complete a unit of work
  • Elapsed time - measures time taken for a batch of operations to complete
  • Throughput - amount of work an application can accomplish per unit of time (seconds)