most common nosql databases

traditional RDBMS is not strong. The share-storage-based RDBMS is made into a distributed database, and users need to develop the Proxy layer. The above problems make us have to consider NoSQL storage solutions such as BigTable in the face of massive data. So for DBAs who are used to designing schema for RDBMS, the schema design problem for migrating to BigTable NoSQL systems requires a different idea to c

difficulty of operational compliance in a large-scale deployment environment (compared to existing databases). Clustrix's challenges and competitors include Memsql, NuoDB, and Voltdb, both of which have their own differentiated advantages, while also relying on the advantages that can be quickly built to successfully attract large numbers of customers. 　　Official website:http://www.clustrix.com/ 　　Couchbase tightly following the footsteps of mobile a

layer processing.This problem is common in scenarios such as data consistency maintenance and cluster State synchronization, such as cluster member information propagation. While a coordinator who introduces a monitoring database and develops a synchronization plan can solve this problem, a centralized database can provide better fault tolerance. The main practice of de-centering is to use a well-designed infection protocol [7], which is relatively s

In-depth analysis of distributed algorithms for NoSQL Databases System scalability is the main reason for promoting the development of NoSQL, including distributed system coordination, failover, resource management and many other features. In this case, NoSQL sounds like a big basket, and everything can be inserted. A

10 things you should know about NoSQL Databases Since the 1/4 century, relational databases (RDBMS) have been the mainstream database models. But now non-relational databases, "Cloud" or "NoSQL" databases, are gaining an increasin

Basic knowledge about NoSQL Databases This article is from: NoSQL database getting started. For details about how to download the PDF version, seeWhat is NoSQL? Have you heard of NoSQL? In recent years, this word has received a lot of attention. When you see the word "

Label:Almost every web developer has its own favorite database, or its most familiar database, but the most common are the following:MysqlPostgreSQLMSSQLSqliteMS Accessor simpler XML, text files, and so on. These databases have excellent documentation, strong community support behind them, most popular CMS use one or more of them, they are easy to use, most managed service providers provide the correspondin

Have you heard of ldquo and NoSQLrdquo? In recent years, this word has received a lot of attention. When you see the word ldquo; NoSQLrdquo;, you may mistakenly think it is ldquo; No! Have you heard of ldquo and NoSQLrdquo? In recent years, this word has received a lot of attention. When you see the word ldquo; NoSQLrdquo;, you may mistakenly think it is ldquo; No! This article is from: NoSQL database getting started. For details about how to dow

Label:The relational database (RDBMS) has been the mainstream database model for One-fourth centuries. But now the non-relational database, "cloud" or "NoSQL" database, is being used as an alternative database model to gain more and more share. In this article we will focus on the 10 key features of a non-relational NoSQL database: The top 5 advantages and the top 5 challenges. Tip: Click the link to downlo

, but the application of the database. The logic of the application determines how to use the database. Of course, there are also many ways to optimize the database to conceal the problems of the application itself. Therefore, we need to monitor and optimize the application usage mode. At the same time, the application logic is determined by the input data or the mode of interaction with users in most cases. Therefore, we must analyze user behavior, user operations determine how the database is

, so a distributed lock or PAXOS [20, 21] Such a consistent protocol can solve this problem. This technique supports atomic read rewriting semantics and arbitrary isolation levels of transactions. Another approach is to avoid distributed concurrent writes, which route all writes to a particular data item to a single node (either the Global primary node or the partition master node). To avoid conflicts, the database must sacrifice the availability of network isolation. This approach is often used

As we all know, relational data types have always been one of SQL's criticism. With the increasing variety of data, the conversion from various data types to relational data types has plagued most SQL database users. However, the advantages of SQL databases are undeniable. If you can have both the fish and the bear's paw-implementing nosql Data Types in the SQL database, isn't everything a wonderful change

Intelligence Nosql databases have evolved to meet the expansion needs of modern Web 2.0 applications. Correspondingly, most of their feature sets are designed to meet the needs of these applications. HoweverProgramThe value of data in is beyond the period of insertion, reading, update, and deletion of a typical web application. mining information from the company's database to improve the company's effic