[Question]Can STA check duplicate data?

[mulderyu]

If I POST two identical data, such as
{
"phenomenonTime": "2023-11-27T06:07:59Z",
"result": 13.24
}
can FROST-server avoid writing the same data twice ?

Currently, I have to check data manualy to prevent writing identical data

[hylkevds]

The standard makes no statements on dealing with duplicate data. What exactly constitutes a duplicate, and what should happen when one is found, can also be use-case specific, so currently checking for duplicates has to be done by the client.

It is possible to manually add a constraint to the observations table to check for duplicates, though that would currently result in a 500 "failed to store data" error, which is not the most useful.