Data Structures Simplified

Whether you're using relational database systems, hash tables, or other structures to maintain your data, you must have heard about NoSQL and big data. At present, companies such as Google, Yahoo and Amazon are already developing or using large data/nosql solutions. But apart from some very specific cases, are these big data implementations really that useful? In a recent article, Capgemini consulting company Steve even pointed out that sometimes large data may be a big scam, or at least not fully become a panacea, can solve the original relationship ...

In addition to the "normal" file, HDFs introduces a number of specific file types (such as Sequencefile, Mapfile, Setfile, Arrayfile, and bloommapfile) that provide richer functionality and typically simplify data processing. Sequencefile provides a persistent data structure for binary key/value pairs. Here, the different instances of the key and value must represent the same Java class, but the size can be different. Similar to other Hadoop files, Sequencefil ...

Total IT spending on cloud computing will grow at least 3 times times by 2012, according to projections. For cloud computing, from the perspective of the IT department, Enterprise Cloud computing is expected to provide resilient scalability, pay-as-you-go and predictable cost structures, while improving data access mechanisms. 　　From a business unit perspective, this means being able to turn asset costs into operational costs, improve productivity and innovation, while reducing it costs and operating costs. The technical maturity makes the practical cloud solution both available and affordable. At present, most big enterprises are already groping some method, ...

Although the "editor's note" has been available for 9 years, the popularity of Mongodb,hamsterdb is still lacking, and it has been rated as a Non-mainstream database. Hamsterdb is an open source key value type database. However, unlike other Nosql,hamsterdb, which are single-threaded and not distributed, they are designed to be more like a column store database, while also supporting acid transactions at the Read-committed isolation level. Then compare Leveldb,hamsterdb will have any advantage, here we go ...

Blockchain is a new technology that is gradually emerging with the increasing popularity of digital cryptocurrencies such as Bitcoin.

With the extensive deployment of multi-core systems, clusters, grids and even cloud computing in recent years, virtualization technology has become more and more advantageous in business applications, not only reducing it costs, but also enhancing system security and reliability, and the concept of virtualization has gradually deepened into people's daily work and life. Aiming at the x86 platform, this paper first gives the basic concept and classification of virtualization technology, then expounds the realization principle and challenge of pure software virtualization, and finally introduces ...

Wan Optimizer riverbed recently released a virtualization Steelhead series for cloud computing and a way to accelerate iSCSI data interchange. Riverbed's steelhead is a physical device deployed to the outbound/inbound port in the data center to speed up wide area network (WAN) traffic in the data center. It can work with steelhead deployed on the other end of the network to reduce the inefficiency of network operations and data redundancy. The virtual Steelhead series device is a software that can run in ...

First, the question before the Palestinian exhibition: is the Mobile communications Empire heading towards dusk? Before going to Barcelona to participate in the 2015 World Mobile Communications Exhibition (hereinafter referred to as the Bar show), the heart has always had a doubt, that is the mobile communication really towards dusk? One is the growing sadness of global operators, the stagnant growth of international mainstream operators and the rapid growth of Chinese operators. Vodafone reported that, starting in the 1 quarter of 2014 (the last quarter of 12/13 's earnings), total operating income continued to decline until the last quarter of 2014, the same ...

MYbank: A "financial cloud" platform at the beginning of this year's MYbank is a financial wealth products online search and price platform, but this is not MYbank founder Chen Vision, plus the September this year to the function of the online is to provide an on-line platform, Allows financial products to search for parity online, and can be delivered online. At the same time, the financial products and Internet enterprises docking, in the specific online scene to provide financial services. In addition, MYbank can provide large data Analysis Services. Financial institutions, Internet enterprises, including users ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall a technical article 1 link links is the connection between Internet pages, no link between all pages and the site will be isolated. What is a chain connection? In SEO this area the anchor link can be understood as text links. Search engines evaluate the importance and authority of a site by linking dependency calculations. Early in the years ago, Baidu and Google's founders were given a detailed description of the importance of linking. The fundamental principle of its hyper-chain analysis is: In all the results of a search ...