Programming Concurrency on the JVM

Using Transactors

Akka transactors or transactional actors bring execution of multiple actors into the folds of a transaction. Transactors make atomic the changes to managed STM Ref objects from multiple coordinating actors. The changes to these objects are retained only if the encompassing transaction commits; otherwise, the changes are discarded.

Transactors provide three options to process messages:

• The default option is to process a message in its own transaction.

• We can implement a normally method that can process select messages stand-alone, that is, not as part of any transaction.

• We can ask for messages to be processed Coordinated, that is, as part of an overarching transaction.

Transactors provide us with the flexibility to link ...