Custom scheduler: Using loom for deterministic simulation testing

[Yannick Lecaillez]

On Tue, Jul 8, 2025 at 4:31 PM Robert Engels <robaho at me.com> wrote:

> I am curious though - what if the application code uses async native type
> calls (NIO). What would be synchronous testing in this? I assume it would
> have to behave as if it was synchronous - callback immediately called - but
> that’s not how it works in the real world - so what are you testing ?
>

All that is quite early stage but we have a tiny network simulator PoC
(based on the blocking Socket API) which is deterministic and allows us to
inject fake failures and latencies.
We don't use async I/O anymore, thanks to Loom. No async, no callback.

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