Enable this option to keep the connection cached ready for the next Action that needs it. When enabled you will be able to specify Min Connections and Max Connections. When Flow first uses the connection it will create Min Connection number of connections. It will then create any further connections that are needed up to Max Connections.
By keeping the connection cached it will speed up processing by avoiding the need to reconnect the database, particularly when the connection is used often. This option also allows you to control the maximum number of connections Flow will have to the database at any one time. Flow will never use more than Max Connections and multiple Actions are processing that require more connections, these Actions will be paused until a connection becomes free.