[GitHub] [skywalking] hanahmily commented on issue #7112: Add debug services(GraphQL) in query protocol

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hanahmily commented on issue #7112:
URL: https://github.com/apache/skywalking/issues/7112#issuecomment-859955784


   @wu-sheng and I discussed this solution a few weeks ago. After that, an auto-config log4j gives more help than dynamic statistics. . We should promise to change the logging level on the fly since rebooting OAP would cover up the problems.
   
   The reason is :
   
   1. Logging has more details than metrics, which will give our users more flexible paths to investigate issues. 
   2. Logging would use fewer resources than specific metrics with some turn-on/off switches. 
   
   For this issue, if the ALS-related debugs logging is active, the user will leverage `grep` and `wc` to filter and statistic objects they want. We might provide some instruments about how to statistic the key metrics, or enhancement `swctl` to handle logs. 
   
   Future more, log4j has provided some ways to implement [auto-config](https://logging.apache.org/log4j/2.x/manual/customconfig.html). We will not have to introduce any new APIs. 


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