Hacker News new | ask | show | jobs
by Filligree 789 days ago
> This, kids, is why GET requests should be idempotent.

I'm not sure I understand. What is this referring to?
2 comments
bombcar 789 days ago
https://threadreaderapp.com/thread/990684453734203392.html

Had a GET request that would open or close the garage door.

Safari learned he liked that page, and would hit it every time he opened a new tab on any device.

link
Filligree 789 days ago
Ah, I see...

POST requests should be idempotent, ideally. PUT requests certainly must be; it's their defining characteristic. GET requests, though, just shouldn't have side-effects at all.

(A /toggle URL isn't idempotent. If it were /open and /close it would be, but still shouldn't be GET.)

link
bombcar 789 days ago
Yeah I think people are saying "GET shouldn't change state" and using idempotent incorrectly (which is more "hitting this multiple times shouldn't change things more than once").
link
ApeTheRick 789 days ago
I think the twitter link is messed up, I have to scroll up to see the whole thread.

Edit: Fixed the link now.

link
tjoff 789 days ago
Twitter threads are always messed up if you don't have an account. You can't follow the thread at all.
link