Berkely DB – many writers, many readers

[Andy Leszczynski]

Eric S. Johansson wrote:
> Andy Leszczynski wrote:
> 
>>
>> I need to now option I open the Berkley DB (both db and env) to have 
>> configuration for multiple writers and multiple readers.  Via multiple 
>> processes  and multiple threads. No trx needed.
> 
> 
> the simple answer is you can't.  bdbm is probably single writer multiple 
> reader.  I believe if you use of the the most recent sleepy cat 
> database, you have support for multiple readers and writers in any context.
[...]

I have learned later that you can, just use Concurrent DB poruct 
(db.DB_INIT_CDB):

...envflags=db.DB_CREATE|db.DB_INIT_MPOOL|db.DB_THREAD|db.DB_INIT_CDB
...env.open(file,envflags)

A.