Real-World Async vs Programming Async in KERI

[seriouscoderone]

The Question

Is KERI's asynchronous nature fundamentally about real-world coordination delays (humans signing at different times, network propagation, witness processing) rather than requiring programming language async patterns (async/await, coroutines)?

The Distinction

Real-world async:

• Multi-sig operations where different controllers sign at different times
• Witnesses receiving and processing events with network delays
• Delegation hierarchies waiting for delegator approval
• Escrow caches handling out-of-order events [7]
• Eventually consistent state across watchers/witnesses [1][2]

Programming async:

• Language-level async/await constructs
• Non-blocking I/O primitives
• Coroutine-based concurrency

The Hypothesis

KERI's core model is fundamentally "real-world async" - a series of stateful operations that complete "later" due to distributed coordination. From an API perspective, implementations could expose synchronous interfaces (submit event → acknowledgment, query state → current state) while the system achieves eventual consistency behind the scenes.

Python async frameworks like hio might be used for I/O efficiency in implementations (handling concurrent connections), but this is implementation optimization, not a core KERI architectural requirement.

The Core Question

Is "async multi-sig" and KERI's asynchronous operations inherently about eventual consistency and real-world coordination timing, rather than mandating async programming patterns?

[SmithSamuelM]

Hio's approach to async is fundamentally different from asyncio and node.js approach to async. Hio is meant to make real world async problems easy to deal with. Hio's async is fully deterministic, so it can be used for faster than real time simulation/emulation i.e. discrete event loop modeling of real world processes. So the point is that the real world is async and so minimizing the impedence mismatch in ones architecture is useful at a granular level. Once can model the asynchronous nature of the real world at a less granular level, which I think is the distinction your are trying to make. But that granularity imposes friction especially when moving from developing to staging to at scale deployment. Whereas HIO says we can be as granular as is useful.

Asyncio and Node.js say, we do async via an event loop with promises and call backs. It is not deterministic so it actually imposes asynchrony when there is none in the real world. Hio does not.

[seriouscoderone]

Ok, let me restate your answer to ensure I am following. You are saying:

1. Yes, the KERI suite is fundamentally about real-world asynchronous coordination, and can be implemented as you see fit.
2. Hio is a terrific implementation tool. Fully deterministic. Minimal impedence mismatch to the real world. Scalable.
3. Other common async code patterns add asynchrony where there is none.

My question was really trying to differentiate between real-world async nature and the programatic async approach.

Because I am so unfamiliar with hio, and its principles (unfortunately), I was trying to determine the utility for async processing in the code (queues, busses, etc..) other than an implementation choice.

You answered my question. I am not asking you to defend you choice of hio, and I have no doubt it is the best choice architecturally and otherwise.

I just wanted to know if I was "missing something" I could not see in the code, vs the true nature of the spec.

My major takeaway: The appropriate granularity for async behavior is FULLY encoded in the spec, external to the implementation.

Thank you