Guides on using different persistent storage: PostgreSQL about scheduledwf

[jas34]

@makmakulet thanks for reaching out to us. We are glad to see that you are interested in using scheduledwf as a module. We will for sure help you out in achieving the same.

At the moment we have README.md#persistence-layer, which can be followed to write PostgreSQL specific implementation for the following interfaces:

1. ScheduledWfMetadataDAO
2. ScheduledWfExecutionDAO
3. IndexScheduledWfDAO

Once written then these implementations can be injected via guice for Version 1.2.2(like MySQLPersistenceModule.java and ScheduledWfServerModule.java) or Spring bean for Version 2.0.0(like MySQLPersistenceConfiguration.java). We also have a plan to extend the same in our new release (likely to be available in a month or two). If you are already planning to do the same then we will be happy to accept PR for the same.

Feel free to share if any other thoughts in mind.

[jas34]

We are in the development of introducing PostgreSQL. Refer - #32

[jas34]

Closing due to no response from the reporter.