mongodb file storage

Gridfs Introduction MongoDB documents are stored in the Bson format and support binary data types when we save data in binary format directly to MongoDB documents. But when files are too large, such as pictures and videos, the length of each document is limited, so MongoDB provides a canonical--gridfs for handling large files. GRIDFS Realization Principle In t

Tutorial 6MongoDB Introductory Tutorial Master-slave replication configuration detailed Introduction to the aggregation and cursor operations of the 7MongoDB Getting Started tutorial 8MongoDB Getting Started teaching the operation of adding and deleting MongoDB database An analysis of index operation of 9MongoDB Getting Started tutorial 10MongoDB Getting Started tutorial of the MongoDB database installatio

"} {"name": "Xiaoming", "Age": "E" , "email": "[email protected]"}　　MongoDB Chinese document format similar to our common JSON, so that we first have "name", "Song" Two fields, and the second one has "name", "Age", "email" three fields, this in the pre-design mode of the database is not possible to insert a successful, But in MongoDB dynamic mode is possible, the advantage of doing this is that we don't ha

(doc, current) {" +"Return doc; \ n" +"};";Protected void Page_Load (object sender, EventArgs e){Init (); Var mrb = DB ["posts1"]. MapReduce (); // attach_gfstream.filesList Using (var mr = mrb. Map (mapfunction). Reduce (reducefunction )){Foreach (Document doc in mr. Documents){PostDoc. Add (Document) doc ["value"]);}}This. Mongo. Disconnect ();} The following is the running query result: The map/reduce method has many other methods. If you are interested, you can take a look at the following

transferred from: http://www.mongoing.com/archives/2540Mongodb-3.2 has been wiredtiger set up for the default storage engine, recently by reading the Wiredtiger source code (without understanding its internal implementation, reading code is very difficult, the code is too large, it is strongly recommended that the official more than the introduction of the article), Clarify the general principle of wiredtiger, and simple summary, do not guarantee that

GridFS introduction mongoDB documents are stored in BSON format and support binary data types. When we save binary data directly to mongoDB documents. However, when the file size is too large, the length of each file, such as the sample and video, is limited. Therefore, mongoDb