Mongodb Select Field

"Editor's note" in the "Pioneer" series of business, High-performance, Wang Tao to build beyond the MongoDB NoSQL, we and Wang Tao talk about High-performance, have a business sequoiadb build experience. Readers need to interpret the advantages of each nosql from the data, we also invited relevant experts at home and abroad to MongoDB, SEQUOIADB, Cassandra, hbase four NoSQL Benchmarking, and published test cases, related data and test rules. This time we will give you the test of domestic experts, ...

NoSQL Recent momentum is good, http://www.aliyun.com/zixun/aggregation/13461.html ">mongodb is one of the Jiao jiao, oneself learn nosql when also reference a lot of information, The final decision to start from the MongoDB, the most important reason has two: 1 oneself is a simple amateur, all problems I think whether there is a simple way to solve, rather stop to think a lot of time, also do not want to use stupid method to do immediately, and Mong ...

One-to-one relationship: Embed, such as http://www.aliyun.com/zixun/aggregation/10619.html "> User information collection has Address field, Address field has three fields of province, city, county. Modeling is as follows: a one-to-many relationship: An article has multiple comments, for 1 to multiple relationships because MongoDB has a size limit of 16M (higher than v1.8 ...) for single documents (document).

Since March 20, 2013 Docker appeared in front of developers, less than two years now. "Docker has transformed from a great idea into a great technology, and from a great technology to a great ecosystem, and even from a great ecosystem to a great movement." "I remember at the Docker summit in 2013, developers were still talking about Docker, and at the 2014 Amsterdam Summit, participants were already sharing its case." However, Docker's business ...

Azure Action Services provides a cloud platform based backend solution for action application developers, which now supports the use of the ASP.net Web API in addition to the use of JavaScript (node.js) to access the backend platform Technology, the operational logic of the backend platform, so for ASP.net developers who want to develop the API for the action device application, Azure Action Service is quite attractive: for the complete operation of all platform ...

"Editor's note" Shopify is a provider of online shop solutions company, the number of shops currently serving more than 100,000 (Tesla is also its users). The main frame of the website is Ruby on rails,1700 kernel and 6TB RAM, which can respond to 8,000 user requests per second. In order to expand and manage the business more easily, Shopify began to use Docker and CoreOS technology, Shopify software engineer Graeme Johnson will write a series of articles to share their experience, this article is the department ...

I have not written a blog for almost a year, it must be an excuse to say that there is no time, but the only reason is that when I get older, I find myself superficial. And some of their ideas have not been waiting to write, found that the original is very naïve, so dare not send to laughable. However, this time I would like to tell you a little story: once there were three cock silk, they gather together to do the network, they provide free network services, and even zaguomaitie, all night, in addition to selling kidney they have done. And in 3 years, they finally did 5 million users, I think for young people, can put 5 million ...

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall almost a year did not write a blog, said no time that is an excuse, the only reason is that the older the more they find themselves superficial. Some ideas have not yet pen, found very naïve, dare not send to laughable. This time to tell you a little story: once there are three cock silk, together to do the network, to provide free network services, Zaguomaitie, all night, in addition to selling kidney what have done. 3 years later, finally achieved 5 million users, for young people, can play 5 million people between applause, has ...

Docker is undoubtedly the most popular open-source technology this year, and Docker is now the darling of entrepreneurs and innovators in the IT world. Regardless of Google, Microsoft, Amazon, IBM and other technology manufacturers are actively supporting Docker technology, Docker although the introduction and use is very simple, but the whole ecosystem is quite large, and its underlying technology is also very complex, the current based on Docker technology projects springing up, today, The author summarizes the rapid evolution of the Docker related technology, to share with you. Kubernet ...

"Guide" Xu Hanbin has been in Alibaba and Tencent engaged in more than 4 years of technical research and development work, responsible for the daily request over billion web system upgrades and refactoring, at present in Xiaoman technology entrepreneurship, engaged in SaaS service technology construction. The electric dealer's second kill and buys, to us, is not a strange thing. However, from a technical standpoint, this is a great test for the web system. When a web system receives tens or even more requests in a second, system optimization and stability are critical. This time we will focus on the second kill and snapping of the technology implementation and ...