If you use Date().getTime() inside a view function, you'll always get the time when that view was indexed, just as you said "it never gets added back to view unless we update it".
There are two ways:
Bad way (don't do this in production). Query views with
stale=false
param. That will cause view to update before it will return results. But view indexing is slow process, especially if you have > 1 milllion records.Good way. Use range requests. You just need to emit your date in map function as a key or a part of complex key and use that range request. You can see one example here or here (also if you want to use DateTime in couchbase this example will be more usefull). Or just look to my example below:
I.e. you will have docs like:
doc = {
"id"=1,
"type"="doctype",
"timestamp"=123456, //document update or creation time
"data"="lalala"
}
For those docs map function will look like:
map = function(){
if (doc.type === "doctype"){
emit(doc.timestamp,null);
}
}
And now to get recently "updated" docs you need to query this view with params:
startKey="dateTimeNowFromApp"
endKey="{}"
descending=true
Note that startKey and endKey are swapped, because I used descending order. Here is also a link to documnetation about key types that couchbase supports.
Also I've found a link to a question that can also help.