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4 points by albertb 6173 days ago | link | parent | on: Take the Arc Challenge

I have more challenge for you.

Do the same thing, but make it survive a reboot of any server in the cluster.

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2 points by s3graham 6173 days ago | link

I'm not sure I'd use db-transactional-serializable-migratable closures that often even if I had them (assuming the overhead wouldn't be worth the occasional "session timeout" message the user would see). Perhaps in some domains though?

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2 points by albertb 6172 days ago | link

You can't? You lose then. Kinda different those are, business and helloworld, aren't they?

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1 point by mst 6171 days ago | link

Looking at clients' deployed applications, the web boxes tend to average over a year's uptime so I can't say it seems like it'd matter that much.

Provided you've got runtime code loading and a useful QA process, I don't really see why you'd need to care - MySQL's lack of transactional DDL causes far more downtime than lack of serialisation would were we using a continuation-based system.

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1 point by albertb 6171 days ago | link

"web boxes tend to average over a year's uptime so I can't say it seems like it'd matter that much."

Unless there is a five or six nines SLA.

"Provided you've got runtime code loading and a useful QA process,"

Hardware might crash as well.

"MySQL's lack of"

That one is really good.

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