java - 经常出现Connection Reset，求大神指教~

Answer 1

What method do you use to connect data? JDBC direct connection, DBCP, C3P0?

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I also encountered this problem before (the latter two methods), because I don’t use C3P0 now. Here are my DBCP settings:

maxIdle="20"
maxWait="120000"
testOnBorrow="true"
validationQuery="SELECT 1"

After setting these 4 parameters, my server is scheduled to restart every morning when no one is around. The key are testOnBorrow and validationQuery.

Answer 2

Try increasing the connection pool of tomcat

Answer 3

Probably the volume of requests is too large, tomcat can’t handle it, and nginx (if there is one in front of tomcat) has lost some requests.