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updated README

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1 parent ec6f156 commit 44650cf0c16fe59c7a8b774e47bdf963a60e8841 @caolan committed Jul 28, 2010
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  1. +18 −0 README.md
18 README.md
@@ -27,3 +27,21 @@ accepts a number of options:
(default: 24 hours)
* session_key -- The cookie key name to store the session data in
(default: _node)
+
+
+## Why store session data in cookies?
+
+* Its fast, you don't need to hit the filesystem or a database to look up
+ session data
+* It scales easily. You don't need to worry about sticky-sessions when
+ load-balancing across multiple nodes.
+* No server-side persistence requirements
+
+## Caveats
+
+* You can only store 4k of data in a cookie
+* Higher-bandwidth requirements, since the cookie is sent to the server with
+ every request.
+
+__In summary:__ don't use cookie storage if you keep a lot of data in your
+sessions!

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