Toby Dickenson writes:
> ... problems with high frequency writes ...
> As I understand it, a BTreeFolder alone (ie without application-level
> conflict handling) will not help here.
>
> Folders have to ensure that all their contained elements have a
> different id. The hot-spot is the only way a Folder can achieve this.
Because the application specifies the id, all the folder has to
do is verify that the id does not yet exist. This may "look"
a path from root to leaf.
A conflict between two concurrent transactions results only,
if either both want to modify the same leaf node or if
a tree restructuring becomes necessary.
Dieter
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