nosql database schema design

Tags: data file size principle COM speed restricted expired users do not includeSummary : LEVELDB is a very efficient KV database implemented by Google, capable of supporting billion levels of data. There is also a very high performance at this level, thanks largely to its good design. Especially the LSM algorithm. LevelDB is a single-process service with very high performance on a 4-core Q6600 CPU machine,

Some basic usage MySQL and MongoDB design instance comparison: http://www.51testing.com /? Uid-116228-action-viewspace-itemid-241061 MongoDB common methods: http://blog.csdn.net/cppbegginer/article/details/6968522 MongoDB database installation and PHP connection test on Windows: http://hi.baidu.com/zyrym1989/blog/item/60f9154fb1df84d5d0c86ab0.html MongoDB advanced query: http://www.cnblogs.com/cxd4321/archi

I. What is Message Queuing?A message is the data that is transferred between apps. Messages can be very simple, such as containing only text strings, or they can be more complex and may contain embedded objects.Message Queuing is a way of communicating between applications, which can be returned immediately after a message is sent, and the message system ensures reliable delivery of the message. The message publisher simply publishes the message into MQ without having to take care of who gets it

Software architects who have worked for a number of large companies have taken into account the Kristóf Kovács's NoSQL database of mainstream blogs (Cassandra, Mongodb, CouchDB, Redis, Riak, Membase, Neo4j and HBase) made a comprehensive comparison. Although the SQL database is a very useful tool, the monopoly is about to be broken after a 15-year solo show. It

Do a project, no one will be a database design so perfect so that there will be no changes in the late, the people can design such a database to see you write code on Mars.I wonder if you've ever used NH or EF? After I have used, one to the database structure changes when I

mode. All of these modes must be defined before using the database. The database management system provides the schema Description Language DDL to strictly describe the definitions of all entities in a database, which is stored in the database after compilation. The externa

First, the basic knowledge of NoSQL1. About NoSQLIn the word "NoSQL". is actually created by a colleague called Racker, when John Evanseric to organize an event to discuss open source distributed databases.This is the name and concept.Some people oppose the NoSQL term because it sounds like we define what we are. To a certain extent, but the long-term is still valuable. Since when a relational

-called "entity-attribute-value" (EAV) design pattern is a common bad design pattern, especially when it's not working reliably under MySQL. MySQL restricts a maximum of 61 tables per association operation , but the EAV database requires many self-associations. We've seen a lot of EAV databases that last exceeded this limit. In fact, in many cases with fewer than

following NoSQL storage methods, which looks clearer.) ）This data can be described as a complex case of database design, because it contains two cases (of course, more than the two cases, then there will be more structure), different data table structure is different, which is very troublesome. Our general solution is to des