compression

问题 I am using mongodb to store raw HTML data of web pages using scrapy framework. In one day of web scraping 25GB disk space is filled up. Is there a way to store raw data in compressed format. 回答1: There's nothing built in for compression. Some operating systems offer disk/file compression, but if you want more control, I'd suggest you compress it using a library for whatever programming language you're using and manually control the compression. For example, NodeJs offers simple convenience

问题 I do not know how I can decompress a file having tar.zst extension and even though I did look for solutions on the Internet I ended up having nothing useful regarding the matter. 回答1: The extention .zst means that the archive is compressed by zstd. https://github.com/facebook/zstd The tar command has an option -I (--use-compress-program) to specify a command for compression/decompression. You can use it as follows. $ tar -I zstd -xvf archive.tar.zst 回答2: Decompress it in Terminal. unzstd

问题 I want to enable GZIP compression for my static file like css styles, javascript which is serving from weblogic server. Can anyone help to how to configure this feature in weblogic server. 回答1: Go to http://sourceforge.net/projects/pjl-comp-filter/ to download it and update your web.xml file with the following config: <filter> <filter-name>CompressingFilter</filter-name> <filter-class>com.planetj.servlet.filter.compression.CompressingFilter</filter-class> <init-param><param-name

问题 mod_deflate or mod_gzip , which should be used? I read mod_gzip on better explained but want to know extra about mod_deflate . 回答1: You should read "Compressing Web Content with mod_gzip and mod_deflate" by Stephen Pierzchala. From a pragmatic point of view, I suggest mod_deflate because it is easy to configure, well documented, and actively maintained. Also, a precompiled version of mod_deflate is more than likely available for your server. Apache may even come with mod_deflate , as is the

问题 I'm java beginner, I need something like this: String2GzipFile (String file_content, String file_name) String2GzipFile("Lorem ipsum dolor sit amet, consectetur adipiscing elit.", "lorem.txt.gz") I cant figure out how to do that. 回答1: There are two orthogonal concepts here: Converting text to binary, typically through an OutputStreamWriter Compressing the binary data, e.g. using GZIPOutputStream So in the end you'll want to: Create an OutputStream which writes to wherever you want the result

问题 I have 3 terabyte .gz file and want to read its uncompressed content line-by-line in a C++ program. As the file is quite huge, I want to avoid loading it completely in memory. Can anyone post a simple example of doing it? 回答1: You most probably will have to use ZLib's deflate, example is available from their site Alternatively you may have a look at BOOST C++ wrapper The example from BOOST page (decompresses data from a file and writes it to standard output) #include <fstream> #include

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . Does anyone know of a good online generator to take the source code of an HTML page and compress/minimize the entire page. Meaning, compress/minimize all embedded CSS, JavaScript and obviously the HTML of that web page while also removing unneeded HTML/CSS/JavaScript comments, spaces, tabs, etc? 回答1: Juriy

问题 I have a silverlight 2 beta 2 application that accesses a WCF web service. Because of this, it currently can only use basicHttp binding. The webservice will return fairly large amounts of XML data. This seems fairly wasteful from a bandwidth usage standpoint as the response, if zipped, would be smaller by a factor of 5 (I actually pasted the response into a txt file and zipped it.). The request does have the "Accept-Encoding: gzip, deflate" - Is there any way have the WCF service gzip (or

问题 I have images that I am using for a computer vision task. The task is sensitive to image quality. I'd like to remove all images that are below a certain threshold, but I am unsure if there is any method/heuristic to automatically detect images that are heavily compressed via JPEG. Anyone have an idea? 回答1: Image Quality Assessment is a rapidly developing research field. As you don't mention being able to access the original (uncompressed) images, you are interested in no reference image

问题 So I have an ASP.NET MVC app that references a number of javascript files in various places (in the site master and additional references in several views as well). I'd like to know if there is an automated way for compressing and minimizing such references into a single .js file where possible. Such that this ... <script src="<%= ResolveUrl("~") %>Content/ExtJS/Ext.ux.grid.GridSummary/Ext.ux.grid.GridSummary.js" type="text/javascript"></script> <script src="<%= ResolveUrl("~") %>Content