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After more than eight years of practice, from Taobao's collection business to today to support all of Alipay's core business, and in the annual "Double Eleven Singles Day" continue to create a world record for the transaction database peak processing capacity.

1.1: Increase the secondary data file from SQL SERVER 2005, the database does not default to generate NDF data files, generally have a main data file (MDF) is enough, but some large databases, because of information, and query frequently, so in order to improve the speed of query, You can store some of the records in a table or some of the tables in a different data file. Because the CPU and memory speed is much larger than the hard disk read and write speed, so you can put different data files on different physical hard drive, so that the execution of the query, ...

A good database product is not equal to have a good application system, if can not design a reasonable database model, not only will increase the client and Server section program programming and maintenance of the difficulty, and will affect the actual performance of the system. Generally speaking, in an MIS system analysis, design, test and trial run stage, because the data quantity is small, designers and testers often only notice the realization of the function, but it is difficult to notice the weak performance, until the system put into actual operation for some time, only to find that the performance of the system is decreasing, At this point to consider improving the performance of the system will cost more ...

Absrtact: I am the heavy user of Dropbox. In the United States, my family is the most exaggerated when a total of six computers in use, I often in order to find a file in the end of which computer and headache, Dropbox appear let me think it is exactly what I want "I am the dropbox of heavy users." In the United States, when my family is the most exaggerated when a total of six computers in use, I often in order to find a file in which computer in the end is a headache, Dropbox appearance let me think it is what I want. "Wanghuai a meal, then ...

"I am the heavy user of Dropbox," he said. In the United States, when my family is the most exaggerated when a total of six computers in use, I often in order to find a file in which computer in the end is a headache, Dropbox appearance let me think it is what I want. "Wanghuai," he continued, "But even so, I'm not a paying user." Wanghuai, a former Facebook employee, returned as an angel investor after leaving Facebook in September 2011. He said to the South reporters this passage, both prove that the cloud storage services in ...

"I am the heavy user of Dropbox," he said. In the United States, when my family is the most exaggerated when a total of six computers in use, I often in order to find a file in which computer in the end is a headache, Dropbox appearance let me think it is what I want. "Wanghuai," he continued, "But even so, I'm not a paying user." Wanghuai, a former Facebook employee, returned as an angel investor after leaving Facebook in September 2011. He said to the South reporters this passage, both prove the cloud storage clothing ...

What is a. biz domain name? biz is the abbreviation for English "Business", which represents the business area, and in the case of the. com resource depletion,. Get rid of the mundane. com, you don't need to compare with. com to find out,. biz makes your business http://www.aliyun.com/zixun/aggregation/7814.html "> stand out." Biz is different from. com

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 ...

Recently, the domestic well-known cms/shop system developers Easy Network released its march. NET platform's flagship product: Sitefactory Cms/eshop 1.0. May be because of the popularity of the dynamic CMS is too high, so it's shop system has not been very good to promote, nor was the vast number of netizens webmaster good understanding. In fact, moving easily eshop products is absolutely a very powerful online shop system, not more than shopex such a professional only do shop system products inferior to a few, while in the CMS section, moving Easy eshop ...

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 ...