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 https //github com/node red/node red nodes/blob/master/storage/mysql/68 mysql js to learn more