I recently ran into a situation where i had to define certain variables and make their data available to apps on different servers. The way i went about in doing this is to create a cookie available to that certain domain. I used the "domain" attribute in the cfcookie tag.
<cfcookie name="appName.IsLoggedIn" value="True" domain=".dcfusion.com">
Some things to remember are that you must start with a period. If the value is a subdomain, the valid domain is all domain names that end with this string. This attribute sets the available subdomains on the site upon which the cookie can be used.
For a domain value that ends in a country code, the specification must contain at least three periods; for example, ".mongo.state.us". For top-level domains, two periods are required; for example, ".mgm.com".
You cannot use an IP address as a domain.
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