On 23/09/11 14:00, David Jordan wrote:
The documentation states that TDB can support either multiple readers
or a single writer. I am assuming this is respect to JVMs (distinct
processes). How are threads handled? Does TDB support multi-threaded
applications? If so, can one have multiple threads interacting with
TDB, using different Model objects?
Only one JVM can access the database - if you wanted shared access
between JVMs, then consider running Fuseki, then you will have a shared
database server.
Within one JVM, either multiple readers or a single writer can be active
at anyone time per dataset. There is a lock on the dataset object to help.
Different Models is fine but the rules for MRSW apply. In TDB, a Model
is just a view of the dataset - MRSW applies across the whole dataset.
Transactions are currently just being finished up; the released TDB does
not have transaction support. TxTDB (will be TDB 0.9 if all goes well)
is available as a development build.
Andy
