The Allaire knowledge base article on monitoring memory usage states:
One of the most common causes [of increased memory usage] are improperly
locked access to session, application, and server variables. These variables
are stored in memory and need to be enclosed in a CFLOCK tag with the
appropriate SCOPE attribute specified (i.e. session, application, or server)
when referenced.
while Ben Forta says:
Caution: avoid unnecessary use of <CFLOCK>. Forcing code to single-threaded
use only can seriously impact system performance.
We're building an application which uses session and application variables
on every page (for security and user customisation). Should we use <cflock>
when we read them? Or when we write them? Or both? Does anyone have any
guidelines on <cflock> usage?
Thanks
Tom
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