top 10 nosql databases

Nosql definition:Next Generation databases mostly addressing some of the points: being non-relational, distributed, open-source and horizontally scalable. the original intention has beenmodern web-scale databases. the movement began early 2009 and is growing rapidly. oftenMore characteristics apply as: Schema-free, easy replication support, Simple API, eventually

production applications, there will be fewer. Memcached Memcached traditionally does not belong to the NoSQL category, but is a Distributed Key/Value memory cache solution that can be used to store a variety of temporary datasets, the storage method is no different from other NoSQL database solutions. NorthScale provides a Memcached package for 32-bit and 64-bit Windows platforms, which can be downloaded

about their own views.With the Ali Department of "go to IoE" movement in the community's propaganda louder and louder, the domestic is set off a "go to XXX" technology tide. Not only are internet companies, including operators and financial institutions, already starting to join the trend. As the "O" in the movement of the Oracle database, naturally become the target of criticism, many CIOs and CTO have shown a desire to remove the quick expression. So in the actual application scenario, how ex

Just a few years ago, MySQL was recognized as the king of the open source database field. However, as nosql grew at a compound growth rate of 82% per year, MySQL is facing the risk of being eliminated by nosql in the Web application market. The migration to nosql has not only become a concern for the development trend of the IT industry, but also allows people to

inactivity, if it is specified as 0, the function is turned offTimeout 3006. Specify logging level, Redis supports four levels in total: Debug, verbose, notice, warning, default is verboseLogLevel verbose7. Logging mode, default to standard output, if Redis is configured to run as daemon, and this is configured as logging mode as standard output, the log will be sent to/dev/nullLogFile stdout8. Set the number of databases, the default database is 0,

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

Web applications can not be separated from the database, there are a wide variety of databases available for developers to choose from, such as SQL, NoSQL, key value, graph database and so on. The popularity of different databases among developers is benevolent see, but by counting the public cloud platforms like Amazon, it's easy to see that there is a big diffe

hbase inside. 4 is the value of the user_name we insert. We're inserting password: HBase (main):015:0> put ' blog_user ', ' www.aboutyun.com ', ' Userinfo:user_password ', ' Aboutyun ' Copy CodeQuery results again: HBase (main):016:0> scan ' Blog_user ' ROW Column+cell Www.aboutyun.com Column=userinfo:user_name, timestamp=1400663775901, Value=aboutyun Www.aboutyun.com Column=userinfo:user_password, timestamp=1400665203430, Value=aboutyun 1 row (s) in 0.0390 se

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

, including strings, hashes, lists, sets, and sorted sets. These flexible data structures enrich the application scenarios of Redis and meet the flexible storage needs of more businesses. Redis data is stored in the memory, and the underlying implementation of the epoll event loop is self-written, rather than the use of open-source libevent and other general frameworks, so the Read and Write efficiency is very high. To achieve data persistence, Redis supports regular refresh (which can be implem

Recently, the company is making a NoSQL model selection, and has made the following Rough Analysis and Comparison on several common NoSQL databases over a week. Recently, the company is making a NoSQL model selection, and has made the following Rough Analysis and Comparison on several common

Oracle Releases NoSQL Databases Oracle, as the world's largest relational Database provider, has also joined the NoSQL Database chain in its product chain. In addition, this new Database name is so domineering that it is called NoSQL Database, I think of a joke about Sina Weibo's changing weibo.com Domain Name: Thr

may encounter. In fact, mongodb installation is relatively simple. With the rise of Internet Web websites, traditional relational databases are insufficient in Hong Kong Space. High-concurrency database read/write requirements High concurrent database load, website space, tens of thousands of read/write requests per second, disk I/O bottleneck High-efficiency access to massive data Efficient query of hundreds of millions or even billions of records H

PHP operations on MongoDB [NoSQL] databases. If you need them, refer to them. PHP operations on MongoDB [NoSQL] databases. If you need them, refer to them. I. MongoDB Introduction MongoDB (named from "humongous") is a scalable, high-performance, open-source, free-mode, document-oriented database, it combines the

do not support this function. B + tree can use key indexes.Benchmark testing machine:The virtual machine runs at 2 CPU 2.26G Intel Core 2 Duo with 2 GB memoryVirtual machine:2-core CPUMemory 256 MBOperating system: Unbuntu Server 9.10 32bitSoftware version:* MongoDB: mongodb-linux-i686-2010-02-26* TokyoTyrant: TT1.1.40; TC1.4.42* Redis: 2010-03-01 (git src)Start:Redis-server./redis. conf (the maximum memory size is 210 MB: maxmemory 210000000, vm-enable = yes, vm-max-memory 20000000, vm-pages 1

This article is about 《Will nosql databases live up to their promise?Brief translation of the article. The name of the person or institution is omitted in the translation, and only the opinions of others cited by the author or the author are translated. [Original] Compared with relational databases, nosqlThe biggest advantage of

When SQL doesn't meet your needs or SQL is not a must or the best choice, it's time to consider this kind of nosql.When your memory is larger than your data, the schema is not too sure, MongoDB here quietly waiting for my SQL job to see the busy, do not change the design mode, cool in front of pain in the back;When you are the only pursuit of speed, but also to memcached too simple discord, just memory is more than the data, Redis Qiao sang and stood there;Big, big, too big, I said the data, our