MongoDB Migration - DB Migration
What is MongoDB?
MongoDB allows your teams to easily organize, use and enrich data – in real time, anywhere.
MongoDB is a cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemata. MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License.
- Best way to work with data
- Put data where you need it
- Run anywhere
Why MongoDB
The most popular database for modern apps
- Document-oriented – Since MongoDB is a NoSQL type database, instead of having data in a relational type format, it stores the data in documents. This makes MongoDB very flexible and adaptable to real business world situation and requirements.
- Ad hoc queries - MongoDB supports searching by field, range queries, and regular expression searches. Queries can be made to return specific fields within documents.
- Indexing - Indexes can be created to improve the performance of searches within MongoDB. Any field in a MongoDB document can be indexed.
- Replication - MongoDB can provide high availability with replica sets. A replica set consists of two or more mongo DB instances. Each replica set member may act in the role of the primary or secondary replica at any time.
- Load balancing - MongoDB uses the concept of sharding to scale horizontally by splitting data across multiple MongoDB instances. MongoDB can run over multiple servers, balancing the load and/or duplicating data to keep the system up and running in case of hardware failure.
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Where is MongoDB Useful?
- E-commerce product catalog.
- Blogs and content management.
- Real-time analytics and high-speed logging, caching, and high scalability.
- Configuration management.
- Maintaining location-based data — Geospatial data.
- Mobile and social networking sites.
- Evolving data requirements.
- Loosely coupled objectives — the design may change by over time.
Key Features
- Schema less
- Structure of a single object is clear
- No complex joins
- Deep query-ability. MongoDB supports dynamic queries on documents using a document-based query language that's nearly as powerful as SQL
- Easy tuning
- Ease of scale-out
- Conversion / mapping of application objects to database objects not needed
- Uses internal memory for storing the (windowed) working set, enabling faster access of data