Application Service Quality
Eric Bauer, Randee Adams · 2013
This chapter considers the service offered by applications to end users and the metrics used to characterize the quality of that service. A handful of common service quality metrics that characterize application service quality are detailed. These user service key quality indicators (KQIs) are considered in depth. A simple cloud-based application with a pool of frontend components distributing work across a pool of backend components is illustrated. The chapter then focuses on two high-level application service boundaries: Application's customer facing service (CFS) boundary and Application's resource facing service (RFS) boundary. While different applications offer different functionality to end users, the primary service KQIs across the application's customer facing service boundary for end users of applications generally include one or more of the following: service availability; service latency; service reliability; service accessibility; service retainability; service throughput; service timestamp accuracy and application specific service quality measurements.