[Jdbm-developer] jdbm is implementation of DBCache?

[Thompson, B. B. <BRY...@sa...>]

Hello,

I've been doing some reading on persistent stores.  I found the following
article which provides a comparison of several different page-based (we
are record based) stores.  One of these reads almost exactly like what I
read into the jdbm RecordFile and TransactionManager in another posting
(and the javadoc update on RecordFile in CVS).  See section 2.2 in

   http://citeseer.ist.psu.edu/hulse96logstructured.html

which summarizes the DBCache architecture.

In fact, there are a few differences which I think go directly to some
of the problems that we have with jdbm, e.g., managing memory during
large transactions.

There is also the original publication on DBCache, which is:

ELHARDT, K., BAYER, R. A database cache for high performance and fast
restart in database systems. In ACM Transactions on Database Systems (Dec
1984), vol. 9, pp. 503--25.

I'm going to order a copy of this to read through.  I am curious if the
parallel between jdbm and DBCache is coincidence or deliberate.  Alex,
would you know that?

Cheers,

-bryan