Background: so far, xowf stored workflow definitions in the workflow context, which is generated for every instantiated workflow instance due to the needs of the State Pattern. While the old approach works perfectly fine, when pre request only one or a few workflow instances are created, but is inefficient, when e.g. 100 or more instances of the workflow definition are created.
Now, the instances can share the definition, which is shared based on the revision_id of the workflow FormPage.
The navigation from a WorkflowConstruct (e.g. State) to the wf_ctx is slow and fragile if not following usual programming conventions and should e avoided (the methods of these constructs have the obj passed in, so this path should not be necessary in most situations)
- as long the contents of the wf_container is constant, it can be shared in the per-thread cache.
For now, the new feature is turned off by default via variable ::xowf::sharedWorkflowDefinition, but this will change in the future.