Advanced MongoDB #1
The document describes different MongoDB collections and queries. It shows examples of collections that store products, orders, user profiles and analytics data. It also demonstrates queries that retrieve, update and aggregate data across multiple collections using operators like $inc, $push, $unset and $or. The document provides examples of indexing, explain plans, and journaling configurations.R
MongoDB全機能解説2
The document describes MongoDB's GridFS specification for storing and retrieving files that exceed the BSON document size limit of 16MB. It explains that GridFS splits files into chunks, which are stored as individual documents, and maintains metadata about the file such as length, MD5, and filename in a separate collection. It provides examples of using the mongofiles command line tool to list, s
Mongo DBを半年運用してみた
MongoDB is a document-oriented database that stores data in flexible, JSON-like documents. It supports features like replication, auto-sharding, and indexing. The document discusses using MongoDB with Ameba Pico's photo tagging service, including initial implementation with one shard, expanding to multiple shards as user numbers grow over time, and repairing and upgrading shards over time to suppo
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