Best File Compression Ratio

File compression has two main benefits, one is to reduce the space occupied by storage files, the other is to speed up the data transmission. In the context of Hadoop's big data, these two points are particularly important, so let me now look at the file compression in Hadoop. Hadoop supports a wide variety of compression formats, we look at a table: Deflate is also using the LZ77 algorithm and Huffman coding (Huffman http://www.aliyun.com/zixun/aggregation/1552.html ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall website page volume is big, the website load is very slow, this is a lot of stationmaster very headache problem." But in order to reduce the volume, it is impossible to delete all the content, fish and bear paws can have both? The answer is yes. Many servers and space now support gzip compression. Using gzip compression can greatly reduce page volume ...

The first time to write technical blog, there are not satisfactory place, but also forgive and correct me. Why want to organize this kind of content, I feel like a painter to understand his paint and canvas, sculptor to understand his stone, as a web designer should also have some understanding of the characteristics of the picture format, so as to better express your ideas and ideas. In addition, we also encounter many problems with the format of the picture in our daily work. For example, designers will wonder why some of the output of the page is always unable to achieve the design of the quality and effect, what kind of design is more suitable for Web pages ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host Technology Hall website completes, the maintenance and the management becomes the work which needs to carry on continuously. 　　In this chapter, the site will be optimized for internal links, efficient maintenance, PR upgrade way to introduce. First, optimize the internal links of the site two, the site efficient maintenance of three common sense three, improve the site PageRank have a coup four, site exchange links to beware of counterfeit five, against the vulgar ban on the site's illegal content six, simple configuration let Web server impregnable ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host Technology Hall preface: This article collects some predecessors ' some about the picture optimization skill, gathers together in this, for each method optimization principle has done some research, hoped can give everybody to the picture optimization this piece to play the role of the discussion. Referring to the picture, we had to start with a bitmap, a bitmap image (bitmap), also known as a dot-matrix image or a drawing image, made up of a single point called a pixel (picture element). These points ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall in the website optimization, if the picture optimization is good, not only can improve the loading speed of the page, Enhance the user experience of the site, but also through picture optimization to save the bandwidth of the site. So as a page builder, what method should be used to optimize the picture, both to ensure that the UI restore degree ...

In website optimization, if the picture is optimized well, not only can improve the loading speed of the page, improve the user experience of the website, but also can save the bandwidth of the website through image optimization. So as a page construction engineer should adopt what method to optimize the picture, both to ensure the restoration of UI, but also make the picture the most streamlined? Here I personal experience, to briefly introduce the method of image optimization, first of all, we know some pictures of knowledge: 1. & http: //www.aliyun.com/zixun/aggregation/37954 ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall site optimization benefits are very many, from the major aspects of the following: 1. Page loading speed into Times of Ascension according to the site's original state and the degree of optimization, the effect of Ascension is also different. 　　Generally can promote 3~5 times. 2. Reduce site traffic to ...

December 2014 12-14th, hosted by the China Computer Society (CCF), CCF large data Expert committee, the Chinese Academy of Sciences and CSDN co-organizer of the 2014 China Large Data Technology conference (DA data Marvell Conference 2014,BDTC 2014 will be opened at Crowne Plaza Hotel, New Yunnan, Beijing. The three-day conference aims to promote the development of large data technology in the industry, and to set up "large data Infrastructure" and "large data ..."

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall customers often encounter their own web site browsing speed Slow situation, there are many reasons for this situation, For example, the local network and the United States host poor connectivity, a host of customers too much, the customer's program is very expensive CPU resources and so on. 　　And these are all relatively random, customers can not control themselves. So now ...