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Posted to notifications@shardingsphere.apache.org by "hypercube1024 (via GitHub)" <gi...@apache.org> on 2023/08/21 01:54:41 UTC

[GitHub] [shardingsphere] hypercube1024 commented on issue #28151: Shardingsphere 5.3.2 the first query very slow.

hypercube1024 commented on issue #28151:
URL: https://github.com/apache/shardingsphere/issues/28151#issuecomment-1685502353

   > @hypercube1024 The first query cannot hit the cache.
   
   The first query over 2 seconds in high concurrency backend service tiggers the fuse protector and alarm when the service restarts. I thinks the shardingsphere JDBC needs optimize the antlr parser performance and persists the parsed sql into DB. Loads one row data from db only 2ms but parsed one sql needs 2 seconds.


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