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It was easy to choose a database two or three years ago. Well-funded companies will choose Oracle databases, and companies that use Microsoft products are usually SQL Server, while budget-less companies will choose MySQL. Now, however, the situation is much different. In the last two or three years, many companies have launched their own Open-source projects to store information. In many cases, these projects discard traditional relational database guidelines. Many people refer to these items as NoSQL, the abbreviation for "not only SQL." Although some NoSQL number ...

The development of spark for a platform with considerable technical threshold and complexity, spark from the birth to the formal version of the maturity, the experience of such a short period of time, let people feel surprised. Spark was born in Amplab, Berkeley, in 2009, at the beginning of a research project at the University of Berkeley. 　　It was officially open source in 2010, and in 2013 became the Aparch Fund project, and in 2014 became the Aparch Fund's top project, the process less than five years time. Since spark from the University of Berkeley, make it ...

Pinterest has maintained an exponential growth that will be doubled every 1.5 months. In two years, they achieved PV from 0 to tens of billions of, from the beginning of the two founder plus an engineer to now more than 40 engineers, from a small MySQL server to 180 web Enigne, 240 API Enigne, 88 MySQL DB (Cc2.8xlarge, each DB will be configured with a slave node), 110 Redis instance and 200 Mmecach ...

This ranking is based on the DB engines list, which analyses 200 different databases on the market, listing top 10. The undisputed top 3 Oracle, MySQL, and Microsoft SQL Server have all along been occupying the first three of the rankings with an absolute advantage, carving out the largest number of users in the market with unique advantages. 1. Oracle 11g First release: 1980 Licensing mechanism: Proprietary SQL: Yes ...

The emergence of the Twitter Manhattan database shows that today's database technology has been unable to meet the unique needs of large internet companies, and a new round of the database revolution has started. Twitter is one of the fastest-growing products in all large internet companies, and this week Twitter posted the technical details of the Manhattan (Manhattan) database, the core engine of real-time data services. Manhattan is a distributed, real-time database that serves multiple teams and applications within the Twitter company. ...

According to foreign media reports, when consumers step into the U.S. largest auto parts retailer AutoZone located in Texas Veken's retail stores, will find the vast majority of AutoZone stores have no special sales shock absorbers. In Minneapolis city, consumers will find discounted Reese's traction equipment at the AutoZone retail store. In Florida State's Malber, consumers will find a special sale of nets. Directional trading is part of the AutoZone global supply chain strategy from the retail level, which reduces consumers ' access to autozone retail ...

So far, Hadoop and large data are actually synonyms. 　　But with the hype of big data rising, there's been a lot of misunderstanding about how Hadoop applies to big data. Hadoop is an Open-source software framework for storing and analyzing large datasets that can handle data distributed across multiple existing servers. Hadoop is designed to handle diverse, large-load data from mobile phones, e-mail, social media, sensor networks, and other different channels, and is often considered a large data operating system. And this is the first source of misunderstanding: 1.

Who would say IT companies now boring? Great thinking and bold new directions in technology are changing everything with unprecedented initiative, and it is time to consider the long-term implications. The exciting 2013 is not over, but I can not wait to share my feelings about so many emerging trends. For this reason, I have prepared such a forward-looking outlook for the coming year. I originally thought I would make the predictive conclusion as the main content, but at this historic moment of this year, many trends have begun to brew and initially bear fruit ...

The operating language of the data is SQL, so many tools are developed with the goal of being able to use SQL on Hadoop. Some of these tools are simply packaged on top of the MapReduce, while others implement a complete data warehouse on top of the HDFs, while others are somewhere between the two. There are a lot of such tools, Matthew Rathbone, a software development engineer from Shoutlet, recently published an article outlining some common tools and scenarios for each tool and not ...

MongoDB is currently the best document-oriented free Open-source NoSQL database. If you are preparing to participate in a technical interview for the MongoDB NoSQL database, you might want to look at the following MongoDB NoSQL interview questions and answers. These MongoDB NoSQL interview questions cover the basic concepts of NoSQL databases, replication (Replication), fragmentation (Sharding), Transactions and locks, trace analysis Tools (Profiler), nuances, and logging features. Let's look at the following ...