Will Norris on one of his Repos@GitHub.

Like that idea...

@kaiser hmmm, link to his original posting?

@TomJNowell Here we go.

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I need to do something on plugin activation/update that could be very costly ( potentially cause timeouts ), but it needs to happen only once, is there a way I can be sure I can do the work? I need to be sure if I break it up into separate tasks I dont end up doing it multiple times since I'm copying stuff and I dont want duplicates

@TomJNowell cron it? retry until detect flag as completed

@Rarst so I can be sure that the cron job will only run the once if I specify so? basic question I know but rather be sure

I've got to copy a table on each site into a single main table

hence if I mess up or two run at the same time I'll have a lot of duplicates

@TomJNowell well... reasonably sure :) not completely, cron is weird like that

you want atomic execution (like in version control) and it's not a trivial thing

perhaps Im going to be stuck with something similar to the update network page

ah table copies are faster than I thought

@Rarst Did you downvote my old question here?

@kaiser auto gets a downvote when closed

@kaiser as above

Ah, k. Didn't know that.

Just wanted to know if it was a rage downvote from answerer I downvoted.

for my own reference