arangosh> db.ids.ensureIndex({ type: "skiplist", fields: [ "myId" ], unique: true });
{
"fields" : [
"myId"
],
"id" : "ids/348212808",
"sparse" : false,
"type" : "skiplist",
"unique" : true,
"isNewlyCreated" : true,
"code" : 201
}
arangosh> db.ids.save({ "myId": 123 });
{
"_id" : "ids/348474952",
"_rev" : "348474952",
"_key" : "348474952"
}
arangosh> db.ids.save({ "myId": 456 });
{
"_id" : "ids/348671560",
"_rev" : "348671560",
"_key" : "348671560"
}
arangosh> db.ids.save({ "myId": 789 });
{
"_id" : "ids/348868168",
"_rev" : "348868168",
"_key" : "348868168"
}
arangosh> db.ids.save({ "myId": 123 });
[ArangoError 1210: cannot create document, unique constraint violated]