If you use the Catalina Queue Engine for queuing records, you might want to retrieve data in a FIFO (First In First Out) method. This means you want to grab the oldest records first. This is easily accomplished by calling the Catalina Queue API with the parameter sortBy in the query string.
Example, if you are retrieving the queue ORDERS, you would format your URL, for the Queue API, like this:
This will then sort the queue in Ascending order by createdDate. Which means it will retrieve oldest items first.
Below is a curl example that does the same thing.
curl -X GET \
-H 'Accept: application/json' \
-H 'Authorization: Basic YOURAUTHHERE' \
-H 'Cache-Control: no-cache' \
-H 'Content-Type: application/json' \
-H 'CpnyID: YOURCPNYID' \
-H 'SiteID: YOURSITEID' \
-H 'cache-control: no-cache'