[JIRA] (MDA-244) Stage to permit explicit parallel execution

[Ian Young (Jira)]

Ian Young ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3Ae127cb03-43ed-473d-b6ba-592949cb4be8 ) *commented* on MDA-244 ( https://shibboleth.atlassian.net/browse/MDA-244?atlOrigin=eyJpIjoiNzY4YzllMzI3MzFmNDk0MjhhYTdkNGVhNGFkYzRjNzciLCJwIjoiaiJ9 )

Re: Stage to permit explicit parallel execution ( https://shibboleth.atlassian.net/browse/MDA-244?atlOrigin=eyJpIjoiNzY4YzllMzI3MzFmNDk0MjhhYTdkNGVhNGFkYzRjNzciLCJwIjoiaiJ9 )

It’s probably worth noting that the calculus about what is worth doing in this area changes dramatically with the introduction of virtual threads (not available yet, possibly available in Java 21) and structured concurrency (almost certainly the next LTS after that).

Cheap virtual threads argue for not “batching” the work or pooling threads in an ExecutorService but just firing up one thread per Item.

Likewise, structured concurrency is exactly what we want here: all of those things can operate independently but we come back together before proceeding.

So, if we do something like this earlier than those two features are available, we should take them into account in the design.

( https://shibboleth.atlassian.net/browse/MDA-244#add-comment?atlOrigin=eyJpIjoiNzY4YzllMzI3MzFmNDk0MjhhYTdkNGVhNGFkYzRjNzciLCJwIjoiaiJ9 ) Add Comment ( https://shibboleth.atlassian.net/browse/MDA-244#add-comment?atlOrigin=eyJpIjoiNzY4YzllMzI3MzFmNDk0MjhhYTdkNGVhNGFkYzRjNzciLCJwIjoiaiJ9 )

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