Limit mongodb collection to 1 row

Question

I'm using mongodb with c# driver, and I would like to limit my MongoCollection to maximum 1 row. How do I do that ?

Answer 1

Since this is tagged as mongodb-csharp, FindOneAs or SetLimit may be helpful:

https://stackoverflow.com/a/6593345/284598

Answer 2

If you want to limit the collection itself to one row, you could use a capped collection with max: 1.

db.createCollection("mycoll", {capped:true, size:100000, max:1});