Go NoSQL Series: Choosing the Right Database

Content directory:

• Why use a NoSQL database?
• Key-Value Database
• Document Database
• Column Family Database
• Graph database
• Attached Mind Map
• Reference

NoSQL Series: Choosing the right database why use a NoSQL database?

• Impedance imbalance
  Relational model and in-memory data structures do not match
  Improve development efficiency with more convenient data interaction

• Large amount of data to be processed
  The amount of data exceeds the load-carrying capacity of relational database
  The emergence of large clusters
  In terms of cost, the application of relational database in the cluster, the license fee is a large expenditure;
  Scale-out and scale-out: relational databases can generally only be scaled vertically, implemented by the performance enhancements of single-machine servers, and for scaling to multiple servers,
  (DBMS not designed for use by the cluster)

• High efficiency requirements for data access

Classification key-value database for NoSQL databases

• Products
  Redis
  Berkerleydb
  Memcached
  Project Voldemort
  Riak
  LevelDB

• Applicable scenarios
  Storing session information
  User Configuration information
  Shopping Cart Data

• Not suitable for the scene
  There is a lot of relationship between data
  Transactions that contain multiple operations
  Querying data based on the part of the key value
  Operation Keyword Collection

Document Database

• Products
  Mongodb
  Couchdb
  RavenDB
  Terrastore
  Orientdb

• Applicable scenarios
  Event logging
  Content management system and blog platform
  Website analysis and real-time analysis
  E-commerce applications
  (Requires more flexible mode, low cost to build data model)

• Not suitable for scenes
  Complex query with multiple operations
  Querying a continuously changing aggregation structure

Column Family Database

• Products
  HBase
  Amazon SimpleDB
  Cassdndra
  Hypertable
  BigTable (Google)

• Applicable scenarios
  Event logging
  (Save application state, errors encountered during run)
  CMS and blogging platform
  Counter

• Scenario Not applicable
  Acid Transaction Required
  Where query patterns change frequently

Graph database

• Products
  Flockdb
  Hypergraphdb
  Infinite Graph
  Neo4j
  Orientdb

• Applicable scenarios
  Interconnect data
  Recommended engine
  Location-based Services

• Scenario Not applicable
  Update entities for all or a subset

Attached Mind Map

Reference

The essence of NoSQL