The tracerpattern configuration items are a set of regular expressions that instruct the WrappingJDBCDriver how to determine the tracing name space for this target database.
Accordingly, polling collectors typically use sticky tracer types: the APM system reports the value as unchanged in between all polling events. Figure 4 illustrates this pattern.
因而，轮询收集器通常使用粘附跟踪程序类型：apm系统在生成报告时将假定所有轮询事件之间的值不变。
3
The tracer agent test shows that the flow pattern in the Pipe-cone Shape filter bio-bed is complete mixing.