simple nosql database

1.NOSQL IntroductionNOSQL (not only Sql) refers to a non-relational database. The next generation of databases mainly solves several key points: non-relational, distributed, open-source, horizontally extensible. The original goal was for large-scale Web applications, which began in the early 2009 with features such as freedom of mode, support for simple replicati

Tags: using os data problem ardiv work time Introduction to the NoSQL Database Chapter 1th Basics of NoSQL Databases 11.1 relational and NoSQL databases 21.1.1 What is a brief history of NoSQL 21.1.2 relational database 21.1.3

NoSQL (not-only SQL) non-relational databasecomparison between relational database and non-relational database :Common relational databases: MySQL, Oracle, SQL ServerA relational database involves a federated query (join), which slows down the query when the volume of data is largeNo relationship between

With the development of Internet technology, the traditional relational database can not be satisfied with the storage and analysis of massive data, thus deriving a database NoSQL (not only SQL) which is different from the relational database.The more mature nosql in foreign countries have mongodb,cassandra,tokumx and

NoSQL database This concept for a long time, but also see a lot of companies and products are in use, the pros and cons seem to be analyzed clearly. But there is a doubt in my mind, what is its appearance in order to solve the problem?User Information table, book information table, user Rating Information table for the book, comment form.Now imagine to do a page that shows the content of the comments, there

Article Source: http://article.yeeyan.org/view/271351/239915Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a matter of time: forced to use relational databases, but eventually found to be unable to adapt to the needs of the numerous.But the difference between NoSQL databases is far more than the differences between two SQL databa

The test results show that the SEQUOIADB can reach an import speed of more than 70,000 per second. 　　3, Zipfian distribution, 100% read ▲ Simple random Query test In the test of simple random query, sequoiadb performance is still the most prominent, Cassandra second. 　　4, Zipfian distribution, 50% read, 50% update ▲ Query Update Balance test In the query update balance test, 50% reads, 50% updates, sequoia

support 2000 read operations per second. Dynamodb also provides additional features to further improve the performance of application access, and Dynamodb is able to create and maintain indexes on primary key attributes. The application submits the primary key that needs to be queried to the database. The corresponding data set can be obtained very quickly. In addition to this, Amazon Dynamodb supports the creation of global and local level two index

For every web and mobile application that focuses on the user experience, memory-based NoSQL storage systems such as open source Redis and memcached are becoming de facto standards. However, in recent years, the use of these databases by large enterprises has been slow, due mainly to performance, scalability and availability challenges. Fortunately, the modern programming language (Ruby, Node.js and Python, as well as development platforms (Rails,sin

Tags: start scala understanding operation NULL Conditional Protocol Note log fileIn a previous article, "Introduction to Graphical Database Neo4j", we introduced a very popular method of using graphical database neo4j. In this article, we'll simply introduce another type of NoSQL database--cassandra. The reason for exp

data and safe . two. Non-relational database ( NOSQL):in order to deal with large amounts of data , the relationship between relational database needs to be removed. the initial design of non-relational database is to replace of the relational databaseRedisAdvantages :1, large amount of data deletion and modification

Label:Litedb is a small, fast and lightweight NoSQL embedded database developed by open source. NET, Features:Server-free NoSQL document storage with data stored in a single fileA simple API like MongoDb100% C # code, support for. NET 3.5, single DLL, can be installed from NuGet: Install-package litedbSupports ACID tra

to know the advice of friends.2.MongoDbFactoryThis is located under the Org.springframework.data.mongodb.core, there are two main methodsDB Getdb () throws DataAccessException;DB Getdb (String dbName) throws DataAccessException;Register a factory instance now(1) Method one@Configurationpublic class Mongoconfiguration { Public @Bean mongodbfactory Mongodbfactory () throws Exception { return new Simplemongodbfactory (new Mongo (), "databaseName"); }}(2) Method two: XML configurationThere a

Reproduced from the original address: http://www.cnblogs.com/loveis715/p/5277051.htmlI recently used a graphical database to support a start-up project. In the process of using this kind of graphics database is actually very interesting. So here's a brief introduction to you.The NoSQL database is believed to have been

, restart, query neo4j service ten, NEO4J graphics database Simple Description of the origin of the graph database name in fact, and in the underlying storage mode, neo4j the bottom of the way to the user-defined nodes and relationships stored, through this way, can be efficient implementation from a node,Through the Relationship between node and node, find out t