Hi all,
How are people are generally going about solving the following problem.
All feedback is welcomed (sorry its a bit long).
Problem:
We have a website portal that provides various upload and download
facilities and we wish to display some statistics such as total
downloads, total uploads, "Top 5" downloads etc.
Solutions:
As i see it we can either store this info in an entity bean and access
through a session bean or we can let the servlet control it and write out
the data to a flat file stored where the webserver is (global access).
Hazards:
1. Effectively needing a singleton ejb approach which isn't what
ejb is about ? But how can this be achieved and maintained i.e
ensuring that only one bean is present??
2. If another VM is introduced alongside the current (websphere) then
we have to gain access to the statistics - write IIOP or SOAP interfaces?
3. Servlet approach is easier but keeps the data away from that in the
database. Also what happens when the server fails??
4. Maintaining a "Top 5" list means maintaining a long list of all items
together with download numbers - how efficient is this? Otherwise collect
all data from various objects?? - again how efficient is this??
Many thanks,
Paul
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