M1 Database

Unit testing and integration testing play a pivotal role in the entire process of our software development, on the one hand, programmers to write unit tests to verify the effectiveness of their programs, on the other hand, managers through continuous automated unit testing and analysis of unit testing coverage to ensure the quality of the software itself. Here, let's not talk about the importance of unit testing itself, for most of the current java-based http://www.aliyun.com/zixun/aggregation/13760.html "& ...

Translation: Esri Lucas The first paper on the Spark framework published by Matei, from the University of California, AMP Lab, is limited to my English proficiency, so there must be a lot of mistakes in translation, please find the wrong direct contact with me, thanks. (in parentheses, the italic part is my own interpretation) Summary: MapReduce and its various variants, conducted on a commercial cluster on a large scale ...

Recently, open the downstairs of the books and magazines, see the Carrefour DM advertising paper is no longer be directly stuffed in, but in the envelope inside, by mail to come. Then look at the adjacent other tenants of the books and magazines, some also have, some are empty. 　　Look at the postmark on the envelope and show that the mailing fee is 0.4 yuan. Previous Carrefour DM advertising paper, is by the DM courier door-to-door direct investment, and now the Carrefour DM advertising paper is sent by mail to the hands of consumers. 　　Why is there such a change? Initially, it may be by mail ...

As cloud computing is widely used, the demand for cloud storage has also become widespread and diverse as one of his main trends, even in a single organization. And if you can not get the right service for your specific needs, you're likely to increase the additional costs of cloud storage. Amazon Web Services (AWS) therefore offers a wide range of options for everyone to choose from, each with a different level of performance and price. The first step in optimizing your storage service is to evaluate the strengths and weaknesses of the various AWS cloud storage options. AWS has three storage services to choose from: Amazon Simple Storage Service ...

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 ...

The cloud infrastructure, such as Amazon EC2, has proven its value worldwide, and its ease of scaling, out-of-the-way, on-time billing, and so on, has freed developer creativity more thoroughly, but don't overlook the virtualized environment that was once considered a performance killer for applications and databases. Despite the performance aspect, cloud vendors have been looking for ways to improve, but as users of us, our own performance optimization tools are also essential. On the entity server, Aerospike has shown the peak of the million TPS, and now we are dedicated to improving the performance of cloud applications ...

Recently, a number of media on "China's cloud computing market presents a new pattern, bath emergence" of the report, caused by the industry and a lot of media attention and discussion, so someone exclaimed "China's cloud computing will enter the bath ERA!" News shows, in Tencent, Baidu, Ali Internet three strong forces to push cloud computing and in the country happy enclosure, investment more than tens of billions of, as China's largest independent cloud computing service provider-Huayun data also gradually surfaced. It can be said that 2014 is a year of China's cloud computing, the industry will show Bath (...)