Best way to sync projects?

[Muttok]

Is there any good practice to sync tripletex projects to on-prem database?
We have a customer that needs a local db with tripletex projects and we want to keep the sync job to minimum data transfer.
The customer service has a "changedSince" property that works perfect. Is there anything similar to projects?

[VebjornRiiser]

Very late, but you could use the "If-None-Match" Header.
On the first call to projects you put something that will not match. ex: "If-None-Match: 1"
Then you will get versionDigest as part of the response. Then you could check a while later and then you will get a 304 not modified if the projects has not changed.

Another option is to use webhooks.
You can subscribe to project.create, project.update and project.delete