gistfile1.txt

Document Structure
------------------

{
  _id: "whatever",
  type: "some category style grouping",
  date: Unix time stamp
}

Map Function
------------

function(doc) {
  emit([doc.type, doc.date], 1);
}

Reduce Function
---------------
_sum

URLs & Results
--------------

?group=true

{"rows":[
{"key":["a",1],"value":1},
{"key":["a",10],"value":1},
{"key":["a",100],"value":1}
]}

?group=true&startkey=["a", 10]&group_level=1

{"rows":[
{"key":["a"],"value":2}
]}

?group=true&endkey=["a", 1]&group_level=1

{"rows":[
{"key":["a"],"value":1}
]}