Nested Send API

[david1542]

Hi everyone - I have a question about nested Send API with custom reducer. I have an app with 3 levels subgraphs - Root, Middle and Leaf graphs.

The root level uses the Send API to run multiple Middle graphs executions.
Inside the Middle graphs, I'm using the Send API to run multiple Leaf graph executions.
The Leaf graphs need to change a value in the Root state. I have a custom reducer that handles multiple updates on the same key.

I've tried to use Annotate in the Middle graph level and also in the Root graph level but I get weird race conditions and seems like
some updates overwrite each other.

My question is - where should I use the custom reducer?