Big Data

This article is the MongoDB Production notes section of the translation http://www.aliyun.com/zixun/aggregation/13461.html ">mongodb Manuel. This section focuses on the various considerations that affect performance and reliability in the production environment, and is worth the attention of workers who are deploying MongoDB. This article describes in detail the key system configurations that affect MongoDB, especially the production environment. The following are ...

Recently, http://www.aliyun.com/zixun/aggregation/1560.html ">facebook Open source flint--a c++++ Static code analyzer written in D language, That's more consistent with Facebook's style. 　　Facebook Open Flint Software source code, not only through the user and the programmer's feedback to flint constantly update and improve the performance of flint. Why not ...

Recently MongoDB in hack news is frequently shot. Many people even claim to hate Mongodb,david Mytton on his blog to expose MongoDB many existing problems. But those who hate have a lot in common, as a comeback: Russell Smith brings a summary of years of work experience. Russell Smith has worked as an OPS and a large website scaling advisor and has helped Guardian, Experian and many other companies, MongoDB Lond ...

The cloud platform is composed of n>=1 meayundb subset groups, and the applications on each subset group are identical, and the only difference is that the data stored by each MEAYUNDB subset group is different. 　　All of your data is distributed to each subset of the cloud platform, and each subset group stores only a portion of your data. The number of MEAYUNDB instances in the Meayundb subset group requires >=1 (the number of instances is determined by the user), and the MEAYUNDB instance data in the same subset group is exactly the same, providing the same externally ...

This usage is very practical for the following applications: write-intensive cache embedded systems that precede a slow RDBMS system require a lightweight database and a unit test that data in the library can easily be purged without the need for a persistent data-compliant PCI system (testing) If all this could be done, it would be elegant: we would be able to manipulate http://www.aliyun.com/zixun/aggregati without involving disk operations ...

Base64 is one of the most commonly used encodings, such as the development of passing parameters, the <img/> tags in modern browsers to render pictures directly through Base64 strings, and for messages and so on.　　The BASE64 encoding is defined in RFC2045, which is defined as: Base64 content transfer encoding is designed to describe the 8-bit byte of any sequence as a form that is not easily recognized directly by the person. We know that any data is stored in binary form on the computer. One byte is 8 bits, one character is stored in the computer ...

Greg Kroah-hartman yesterday announced the release of the second maintenance version of Linux Kernel 3.13, which brought a lot of updates and fixes that users can now download for free. Linux kernel 3.13.2 Releases the architecture updates for arm, s390, PowerPC, Pa-risc, and x86, as well as extensive drive updates for MMC, wireless, RTC, SCSI, TTY, USB, IPV4 and Http://www.aliy ...

Small files refer to files that are smaller than the block size (default 64M) of size HDFs. If you store small files in a HDFs, there will certainly be a lot of such small files in HDFs (otherwise you won't be using Hadoop).　　The problem with HDFs is that you can't handle a lot of small files efficiently. Any file, directory, and block, in HDFs, is represented as an object stored in the Http://www.aliyun.com/zixun/aggrega ...

The writer, Matt Asay, is vice president of MongoDB's business development and corporate strategy. In his article, he focuses on why it is increasingly difficult to see open source in open source enterprises, in addition to the impact of some of the companies, but also the open source enterprise autonomy to reduce the dependence on open source. (The following is compiled content) Peter Levine, a former open-source entrepreneur and venture capitalist, believes it would be a foolish thing for entrepreneurs to emulate Red Hat's already mature open source route. ...

Naresh Kumar, a software engineer and enthusiastic blogger, has great interest in programming and new things, and is happy to share technical research results with other developers and programmers. 　　Recently, Naresh wrote about 12 well-known free, open source NoSQL databases, and analyzed the characteristics of these databases. Now that the NoSQL database is becoming more and more popular, I'm here to summarize some of the great, free and open source NoSQL databases. In these databases, MongoDB the top, with considerable ...

Recently, the launch of the new Xeon processor has once again aroused concern about Intel. Intel's foray into the big data market is no longer news, and last year Intel began to improve hardware and software to meet the needs of "big data" processing, which recently injected large sums of money into the Chinese market and built a data platform aimed at communications, finance and IoT industries.　　From a series of actions that show Intel's vows to compete with Microsoft, Google and Amazon, Saroj Kar, an analyst, has brought us his insights into Intel's data platform. Intel officially launches ...

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 ...

EMC Corporation recently released its first update to the software definition storage application EMCVIPR, which added support for Hadoop and EMC's storage Resource Management suite. 　　EMC also updates its storage Resource Management Suite (srms) for managing storage hardware platforms. EMC disclosed last May that it will use its VIPR to enter the software definition store, September 2013 VIPR officially listed ...

Javascipt is almost all front-end http://www.aliyun.com/zixun/aggregation/7155.html "> developers will have the programming language, and, along with a variety of mobile app's String red, JavaScript can also be used to develop mobile applications. In addition, in order to enrich front-end/mobile development, many developers have introduced a variety of JavaScript based libraries, which can achieve almost any functionality you need, and some libraries can be used to develop ...

Through the introduction of the core Distributed File System HDFS, MapReduce processing process of the Hadoop distributed computing platform, as well as the Data Warehouse tool hive and the distributed database HBase, it covers all the technical cores of the Hadoop distributed platform. Through this stage research summary, from the internal mechanism angle detailed analysis, HDFS, MapReduce, Hbase, Hive is how to run, as well as based on the Hadoop Data Warehouse construction and the distributed database interior concrete realization. If there are deficiencies, follow-up and ...

At the moment, http://www.aliyun.com/zixun/aggregation/13383.html ">spark has gained popularity, and a distributed computing approach based on map reduce makes spark similar to Hadoop, 　　It is more versatile than Hadoop, with more efficient iterations and more fault-tolerant capabilities, and future spark will be a very successful parallel computing framework. "Editor's note" author Mikio Braun is Berlin industrial big ...

Download: Getting Started in the Hadoop Developer Journal January 2010, the "Hadoop developer" was born with the first spring of 2010 years. It is with the dougcutting such a master-level source, it is there are countless for hadoop contributions to the efforts of the open source, only the Hadoop since the birth of much attention to the current high-profile. Hadoop from single http://www.aliyun.com/zixun/aggregation/6575.htm ...

Recently, the open source expert, Peking University mathematics professor Shimen successively in CSDN personal blog article, began to expose the domestic COS operating system Some truth, pointed out that Shanghai Lian Tong Company actually does not have the strength http://www.aliyun.com/zixun/aggregation/ 　　18870.html "> Independent research and development of domestic COS operating system, so was wearing the" Laurel "cos operating system can only be regarded as a" hybrid "operating system, can not be counted as the Chinese operating system" dream. " Zhongke ...

"This is the first time that a yarn architecture can run in a Windows environment," says Jim Walker, head of product marketing at Hortonworks. "Running Hadoop on Windows is important to all customers." "Apache Hadoop yarn is the foundation of Hadoop 2.0 released last October." Yarn, as a Hadoop operating system, uses a single data platform for batch processing and transforms it into a multipurpose platform that can be batch-processed, interactive 、...

Today's Hadoop is synonymous with big data, and Cloudera, MAPR and Hortonworks have formed a pillars, Cloudera aim at lucrative big orders, MAPR are committed to developing the next generation of powerful Hadoop, Hortonworks hopes to build on the strengths of open source communities and partners. Recently, Hortonworks and Red Hat together, the Hadoop and OpenStack technology integration, build a more powerful platform, Giga ...