Johannes Bechberger 3/11/2025

Who instruments the instrumenters and has a runtime handler?

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This technical blog post details the development of a Java meta-agent that instruments other instrumentation agents (like those used by Spring or Mockito). It explains a new handler mechanism that allows developers to add callbacks to monitor and intercept events such as adding transformers and performing class transformations, providing deeper runtime insights.

Who instruments the instrumenters and has a runtime handler?

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