An engineer using DDG for units conversion should be procecuted for malpractice.

deleted by creator

It’s an old abbreviation for feet. A double quote is also an old abbreviation for inches.

It’s a shorthand I learned from my father who was an engineer back before my country converted to the metric system.

There’s a reply below making fun of this as the apostrophe and quote are also abbreviations for minutes and seconds too.

Technically correct (the best kind of correct).

Delightfully ambiguous :-)

60’ is 18m.

Y’all need to learn about significant digits.

I literally watched this yesterday, and just skipped over this entire bit.

“Random back off” is the name of a technique to avoid this exact problem.

Each instance generates a random number of (say) seconds between (say 15 to 120) and schedules the fetch for then. It is extremely unlikely that any two instances select the same second.

This is exactly how driving works. If you’re not using the road to my satisfaction you deserve to die.