MySQL Error Message: Too Many Connections

If you get the MySQL error message Error: Too many connections, this could be caused by the connection limit of 150 connections configured in MySQL. Each MySQL node on the Flows canvas creates a connection pool of 50 connections to the MySQL server, so using 4 MySQL nodes in 4 different Flows Managers could trigger this error. To resolve this, you can manually increase the MySQL connection limit up to 100,000. Refer to GitHub documentation on 68-mysql.js to learn more.