Apdex is a measure of response time based against a set threshold. It measures the ratio of satisfactory response times to unsatisfactory response times. The response time is measured from an asset request to completed delivery back to the requestor.
A user defines a response time threshold T. All responses handled in T or less time satisfy the user.
For example, if T is 1.2 seconds and a response completes in 0.5 seconds, then the user is satisfied. All responses greater than 1.2 seconds dissatisfy the user. Responses greater than 4.8 seconds frustrate the user.
The apdex threshold T can be configured in
service-apdex-threshold.yml file or via Dynamic Configuration. The
default item will apply to a service that isn't defined in this configuration as the default threshold.
The configuration content includes the names and thresholds of the services:
# default threshold is 500ms default: 500 # example: # the threshold of service "tomcat" is 1s # tomcat: 1000 # the threshold of service "springboot1" is 50ms # springboot1: 50