arangosh> db.names.ensureIndex({ type: "skiplist", fields: [ "first" ] }); { "id" : "names/15188", "type" : "skiplist", "fields" : [ "first" ], "unique" : false, "sparse" : false, "isNewlyCreated" : true, "code" : 201 } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15191", "_key" : "15191", "_rev" : "_UWy-NOW---" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15195", "_key" : "15195", "_rev" : "_UWy-NOa---" } arangosh> db.names.save({ "first" : "John" }); { "_id" : "names/15198", "_key" : "15198", "_rev" : "_UWy-NOa--_" } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15201", "_key" : "15201", "_rev" : "_UWy-NOe---" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15204", "_key" : "15204", "_rev" : "_UWy-NOi---" }