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is multi-threaded on every node, which is a major scalability benefit, especially when hosted on custom or Bare-metal hardware. With some great integration features, such as integration with Hadoop, Couchbase is a great choice for data storage.Ten. MemcachedbThis is a distributed key-value storage system that we should not confuse with a cache solution, but rather a persistent storage engine for data storage and retrieving data in a very fast and reliable way. It follows the Memcache protocol.
Originally from: Http://www.infoq.com/cn/articles/MarkLogic-NoSQL-with-TransactionsThe Java platform is painstakingly working to provide the developer with the database persistence functionality for almost the entire life cycle. Have you tried the early JDBC specification, EJB, O/R mappings such as Hibernate, or the recent JPA specification, you are unlikely to have encountered a relational
Label:ACID, which is an abbreviation for the four basic elements that the database transaction performs correctly. Contains: atomicity (atomicity), consistency (consistency), isolation (isolation), persistence (durability). A support transaction (Transaction), must have these four characteristics, otherwise in the transaction process (Transaction processing) can not guarantee the correctness of the data, th
NoSQL in 2010, big and small web site in the pursuit of high-performance high reliability, involuntarily chose NoSQL technology as a priority. At the beginning of this year, the Infoq Chinese station was fortunate enough to invite Mr. Sun Li of Phoenix to share his experiences and experience in NoSQL. It is a great honor to be invited to open up such a column on
Label:1. Database transactions 1.1 Database Transaction refers to a series of operations performed as a single logical unit of work. 4 features (ACID) for 1.2 transactions:(1) atomicity (atomic) (atomicity) transactions must be atomic units of work, and for their data modifications, they are either all executed or not executed. Typically, the operations associate
Tags: nosql NoSQL Basic Concepts and MongoDB MongoDB Basic Application MongoDB Index and copy set The concept of database sharding and the realization of MongoDB sharding I. The basic concept of NoSQLNoSQL (not just SQL), is a technical genre, non-relational
Tags: io strong data issues on CTI database relationship processACID, which is an abbreviation for the four basic elements that the database transaction performs correctly. Contains: atomicity (atomicity), consistency (consistency), isolation (isolation), persistence (durability). A support transaction (Transaction) database
-targeted applications, high concurrent Web applications such as online games (Zynga, for example) 6. neo4j Languages used: JavaFeature: Graph database based on relationLicense to use: GPL, some of which features use agpl/business licenseProtocol: Http/rest (or embedded in Java)can be used independently or embedded in a Java applicationBoth the node and the edge of the graph can have metadataVery good self-with web management functionUse multiple al
)-----------------------------------------------------------------------6. neo4j (v1.5m02)L language : JavaL features : Graphic databaseL use license : GPL, some of which use agpl/commercial licenseL Protocol : Http/rest (or embedded in Java)L can be used standalone or embedded in Java applicationsL fully complies with ACID properties (including persistent data)L graph nodes and edges can have metadataIntegrated pattern-matching-based query language
systems, static and dynamic schema support, memory processing, and high availability. Densodb The. Net solution written in c # By DensoDB is simple, fast, and reliable. SisoDB A document database built on SQL Server. SDB Some small online databases are written in PHP. NoSQL embedded db Node. js-based Asynchronous NoSQL
,value form, document form, picture form and so on, so can store the basic type and object or the collection of various formats, and the database only supports the basic type; NoSQL databases are distributed and easy to scale. Disadvantages: No transaction processing; No support for SQL is provided; Although disk scanning is reduced, it also resu
Although the NoSQL movement does not bring fundamental technological changes to distributed data processing, it still leads to a deluge of research and practice on protocols and algorithms. In this article, I will make some systematic descriptions of the distributed features of the NoSQL database. The scalability of the system is the main reason to drive the dev
look at this problem from the perspective of system design. 1 .? Index support. At the beginning of the relational database service, I did not think that today's Internet applications have such high requirements on scalability. Therefore, the main consideration during the design is to simplify the work of users. The generation of SQL language promotes the standardization of
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
inappropriate to abstract with the same set of models. Hadoop is about the part of the calculation. Mongodb,redis, etc. for online business. Both have abandoned the relational model. Against these two nightmares. The main purpose of a document database, such as MongoDB, is to provide richer data structures to discard joins to accommodate online business. Of course, is not mongodb completely can not use join, can not take to do data analysis, discuss
consistency (ACID: atomicity, consistency, isolation, durability ;) BASE is the principle that NoSQL databases generally have weak requirements on availability and consistency. BASE: Basically Available, Soft-state, Eventually Consistent. Nosql is regardless of the relational structure, but we can use the existing databas
, but the concept of discussion is also crucial for measuring others. Scalability Scaling reading and copying is easy when we zoom in on this, we mean to write data that scales to automatic partitioning of multiple machines. We call for a system that is not sound, such as "distributed database." "This includes cassandra,hbase,riak,scalaris,voldemort, and so on. If you write volumes or data capacity more than one machine can handle, then these are you
Introduction and use of the nosql database CodernityDB developed in Python only, nosqlcodernitydb Look at this logo. It's a bit python-like. The database codernityDB introduced this time is developed in python only. I used the tinyDB local database and an api service. At first, I thought the speed was a little poor. T
relational model. In addition, because the document database transaction support is also relatively weak, general NoSQL will only provide a row lock. This also adds more difficulty to the design schema. There are a lot of things to note about the use of document databases, and this article focuses only on the part of model design. Features of the
Guide: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases.Although 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 b
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