liangjun-jiang commented on issue #4949:
URL: https://github.com/apache/skywalking/issues/4949#issuecomment-697673995
It actually solved the problem. Besides this `is_cache_enhanced_class`, I
also need to turn on the other two as follows.
and seems it doesn't matter whether I set either true or false for
`is_cache_enhanced_class`. either one works.
```
# If true, SkyWalking agent will save all instrumented classes files in
`/debugging` folder.
# SkyWalking team may ask for these files in order to resolve compatible
problem.
agent.is_open_debugging_class = ${SW_AGENT_OPEN_DEBUG:true}
# If true, SkyWalking agent will cache all instrumented classes files to
memory or disk files (decided by class cache mode),
# allow other javaagent to enhance those classes that enhanced by SkyWalking
agent.
agent.is_cache_enhanced_class = ${SW_AGENT_CACHE_CLASS:true}
# The instrumented classes cache mode: MEMORY or FILE
# MEMORY: cache class bytes to memory, if instrumented classes is too many
or too large, it may take up more memory
# FILE: cache class bytes in `/class-cache` folder, automatically clean up
cached class files when the application exits
agent.class_cache_mode = ${SW_AGENT_CLASS_CACHE_MODE:MEMORY}
```
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