Impressive Stephen!  Would you have some details on cost per transaction and
transactions processed per second?  I am sure a number of IT managers out
there would like some figures.

Whilst I suspect transactions per second may not be that different to
RDBMSs, I am sure the cost would outshine the RDBMSs.  

I am also curious if the transactions were simple or complex transactions.
Many transaction tests are done on a simple process as reading a row and
doing a simple update.  If they did the test where a complex calculation
like some complex tax calculation had to be done as part of the update,
where they had to read multiple cross reference files and update multiple
files as part of the transaction.  I suspect that there would be an
exponential decline in RDBM TPS.  The longer a record is locked in an RDBMS
the greater the problems they have.  They have in the past suffered
performance issues in locking a single row and tend lock a group of records,
so one can start imagining the issues with complex transaction in a high
transaction load.

Thanks for bringing this information to our attention

Regards

David Jordan
Managing Consultant
 
[EMAIL PROTECTED]



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