V4MD: Multiple opened Projector edit the same local db -> is that safe?

[Marc Schmitt]

Hi Ruslan,

Are you inferring that:
- each Projector has to re-open the db, do its query and then close the db on every occasion?
- the projector opens the db only if 'db.isOpen' is 0 ?
- and when 'db.isOpen' = 1 then the projector has to wait until 'db.isOpen' = 0 again ?

is that alltogether the open/close trick?
If not, could you please provide more info on that?

Thanks for your good support
Marc

> > 
> > First one:
> > Let's say that I ensure that only one projector is able to write into
> the db
> > and the others are read only.
> > Would that be OK? What could happen beside that bad mojo ? ;)
> 
> Yes. This is so named "open/close" trick.
> We have use it for years before VSERVER.
> We have info that using of VSERVER is about 17-20 times faster of
> open/close.
> 
>