Non Reentrant

To prevent a Cubit method from being called more than once simultaneously, simply add the nonReentrant parameter to the mix function, with value nonReentrant:

void loadData() {
  mix(
    key: this,
    nonReentrant: nonReentrant,
    ...

This is similar to the droppable() EventTransformer from the bloc_concurrency package, but for Cubit methods.

In the example above, if you call loadData multiple times before the first call completes, the subsequent calls will be aborted and return immediately without executing.

Combining non-reentrant with retry

It’s very common to combine nonReentrant with retry:

void loadData() {
  mix(
    key: this,
    retry: retry,
    nonReentrant: nonReentrant,
    ...