Archive Compression

Lrzip (Long Range ZIP) is a compression program that uses an unrestricted-size compressed window, and large files can achieve very high compression rates and speeds. It combines the Zpaq and LZMA compression algorithms to maximize compression, as well as the Lzo fastest speed, reducing rzip redundancy. The purpose of the design is to improve the size of the memory and to further improve the compression. Whether from scale, or optimization and speed are better compression ratios, can even provide compression algorithms, faster than gzip speed. Long Range ZI ...

PHP file Zip compression/* Creates a compressed zip file/function create_zip ($files = Array (), $destination = ", $overwrite = False) {// If the zip file already exists and overwrite is false, return false I ...

Compress,uncompress This command to compress or decompress data. Gzip,gunzip This command is used to compress or extract files, where gzip is a compression and decompression command that is used frequently in Linux systems and is easy to use. The rpm RPM command is used to start the RPM package management operation. The Tar tar command is used to start the File Packager program. Unzip this command is used to decompress files with the. zip extension, that is, you can unzip Windows under Linux with WinZip compression ...

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 ...

Summary: Urchin's report data is stored in a monthly database unique to each profile (note: Urchin data is archived on a monthly basis), which is typically located in the Urchin data/reports directory. The report data for each configured processed database size of urchin is stored in the monthly database unique to each profile (note: The urchin analysis is archived on a monthly basis), which is typically located in urchin data/re ...

Facebook, a world-renowned social networking site, has more than 300 million active users, of which about 30 million users update their status at least once a day; users upload a total of more than 1 billion photos and 10 million videos a month; Week to share 1 billion content, including journals, links, news, Weibo and so on. Therefore, the amount of data that Facebook needs to store and process is huge. Everyday, 4TB of compressed data is added, 135TB of data is scanned, and more than 7,500 Hive tasks are performed on the cluster.

Patool is a portable command line compressed File Manager. For the creation, extraction, testing, and listing of various types of compressed files. The Patool advantage is that it can simply process the archive without having to memorize a large number of programs and options, and the archive format is an extension of the file (1) program as the archive file. Patool supported formats include: 7z (. 7z), Aces (. Aces), ALZip (. Alz), AR (. a), ARC (. arc), ARJ (. ARJ), BZIP2 (. bz2 ...).

The intermediary transaction SEO diagnoses Taobao guest cloud host Technology Hall last chapter I said a lot about fiddler things. 　　There are many detection tools available, such as Fiddler, Chrome, firebug, receptacle Monitor, IIS, and some third-party service. First of all, let's go back to the fiddler feature "Fiddler" tracking tool, especially for the HTTP display requ ...

Reprint a good article about Hadoop small file optimization. From: http://blog.cloudera.com/blog/2009/02/the-small-files-problem/translation Source: http://nicoleamanda.blog.163.com/blog/static/...

Why do you need PGP? Copyright 1996 by Chen Tai-wei [Chen Tai-wei]------------------------------------------------------------------------------- -perhaps you would think that using these confidential programs or systems would make people feel a bit paranoid (paranoid schizophrenia)? To make a reality of