mongodb diff documents

Description: The optimization case is to express the meaning of the individual parameters, combining the analysis of the business with the logical implementation, and how to create the index and column order is selected (no longer described

Good writing, very detailed analysis of different scenarios of the different modelsThis blog post is translated from:http://blog.mongodb.org/post/87200945828/6-rules-of-thumb-for-mongodb-schema-design-part-1?mkt_tok=

ObjectId IntroductionIn MongoDB, a unique _ id field is required to store documents in collections as the primary key. By default, ObjectId is used to define the _ id, because the definition of ObjectId is short enough to maintain uniqueness as much

In NoSQL's heyday today, a variety of nosql products are blossoming, but each product has its own characteristics, there are advantages and not suitable for the scene. In this paper, the characteristics of cassandra, mongodb, couchdb, redis, riak 

1. MongoDBIntroducedMongoDB is a database based on distributed file storage. Written by the C + + language. The main solution is the access efficiency of massive data, providing a scalable and high-performance data storage solution for Web

Original article: team collaboration with GitHub GitHub has become the cornerstone of all open source software. Developers like it, collaborate based on it, and constantly develop amazing projects through it. Except ?? Code hosting, GitHub's main