Avoiding deadlocks in concurrent programming

[Terry Hancock]

On Wednesday 22 June 2005 04:09 pm, Eloff wrote:
> Hi Paul,
> >You're doing what every serious database implementation needs to do ...
> >Are you sure you don't want to just use an RDBMS?
> 
> It was considered, but we decided that abstracting the data into tables
> to be manipulated with SQL queries is substantially more complex for
> the programmer and way too expensive to the system since the average
> action would require 20-100 queries.

I realize you've probably already made a decision on this, but this sounds
like a classic argument for using an *object DBMS*, such as ZODB: It
certainly does support transactions, and "abstracting the data into tables"
is a non-issue as ZODB stores Python objects more or less directly (you
only have to worry about ensuring that objects are of "persistent"  types
-- meaning either immutable, or providing persistence support explicitly).

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com