Dual-Frontier Drain

[Rotorsoft]

Hey @TomKaltz, hope you’re doing well.

This new section (https://github.com/Rotorsoft/act-root/tree/master/libs/act#dual-frontier-drain) relates to what we discussed a few months ago. I’ve been tinkering with it in my spare time, and this seems like a reasonable compromise between performance and simplicity.
You can check out the drain implementation in act.ts and a simple simulation on the landing page.

[Aetherall]

Hi i like your work ! this project is very cool !

To increase performance while maintaining guarantees i use a lock system at the projection level, which allows to define how handlers should orchestrate within a shard of a projected stream. https://github.com/ddd-ts/monorepo/blob/c713c31e11427c633d968e5a8547b552778f6922/packages/core/src/projections/spec/projector.suite.ts#L411
It works pretty well you might be interested !