MACROMEDIA COLDFUSION 4.5-ADMINISTRING COLDFUSION SERVER Manual page 68

46
Client Variable Storage (Continued)
Storage Type
Browser cookies
External
repository
Increasing maximum registry size (Windows NT)
Windows NT notifies you if your registry data is approaching the limit defined for
registry size in the System Properties dialog. If you receive this message, you can open
the System Properties dialog and increase the size of your system registry.
Advantages
Simple implementation
Good performance
Can be set to
automatically expire
Client-side control
Can use existing data
source
Portability: Not tied to a
single server
OS portability in a mixed
environment
Administering ColdFusion Server
Disadvantages
Users can configure
browsers to disallow
cookies
ColdFusion limits
individual cookie data to
4 KB
Netscape Navigator
allows only 20 cookies
from any one host;
ColdFusion uses three
cookies to store read-only
data, leaving only 17
additional cookies
available for use
Requires database
transaction to read/write
variables
Somewhat more involved
to implement