gzip | 易学教程

Enabling data compression for Apache2 + FastCGI setup

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问题 This Question is Related to my earlier post here: CSS loading issue with Android ICS. Where I was facing issue with CSS and JS rendering by Android ICS's default and Dolphin browser . This content is served from my Server's Backend Engine, Which uses ( Apache2 + FastCGI + Python ) setup. While searching for possible problems, I found that main cause for problem was, content was NOT sent in compressed form from Server. So sample Response Header looks something as follows: Connection Keep-Alive

disabling gzip if etag exists in proxy_pass response

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问题 I'm new to nginx. Is there a way to disable gzip if proxy_pass reutrns the ETag header. I.E: gzip on; . . . location /foo/bar { proxy_pass http://server:123; if ($upstream_http_etag) { gzip off; } } Basically I'm looking for a workaround to this bug that will disable the gzip compression if server responded with etag header. http://trac.nginx.org/nginx/ticket/377 Thank you, Vitaly 回答1: There is now, gzip_proxied has no_etag parameter: gzip on; gzip_proxied no_etag; The bug is closed, too. 来源：

Extract .gz files in java

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问题 I'm trying to unzip some .gz files in java. After some researches i wrote this method: public static void gunzipIt(String name){ byte[] buffer = new byte[1024]; try{ GZIPInputStream gzis = new GZIPInputStream(new FileInputStream("/var/www/html/grepobot/API/"+ name + ".txt.gz")); FileOutputStream out = new FileOutputStream("/var/www/html/grepobot/API/"+ name + ".txt"); int len; while ((len = gzis.read(buffer)) > 0) { out.write(buffer, 0, len); } gzis.close(); out.close(); System.out.println(

Why does Android aapt remove .gz file extension of assets?

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问题 When I add a GZIP-ed file to my Android project's assets, the ".gz" extension is stripped when the project is packaged. (So, for instance, "foo.gz" in my assets folder needs to be accessed in code using getAssets().open("foo") .) This doesn't seem to happen with other extensions (e.g., ".html") that I'm using. The asset is still GZIP-ed (I have to wrap the input stream in a GZIPInputStream to read it). Is this standard behavior or a bug? If it's standard, is there any documentation about

How to use Content-Encoding: gzip with Python SimpleHTTPServer

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问题 I'm using python -m SimpleHTTPServer to serve up a directory for local testing in a web browser. Some of the content includes large data files. I would like to be able to gzip them and have SimpleHTTPServer serve them with Content-Encoding: gzip. Is there an easy way to do this? 回答1: Since this was the top google result I figured I would post my simple modification to the script that got gzip to work. https://github.com/ksmith97/GzipSimpleHTTPServer 回答2: This is an old question, but it still

Unzip .gz file using c#

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问题 How to unzip .gz file and save files in a specific folder using c#? This is the first time I encounter a .gz file. I've search in how to unzip it yet It didn't work for me. It didn't unzip .gz file in a specific folder. I don't want to used any third party application. Can anyone gave me a sample code on how to unzip it. Then save file in a folder. Thanks. 回答1: The following example from MSDN shows how to use the GZipStream class to compress and decompress a directory of files. namespace zip

Compresse file with preserve modified time stamp

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问题 I'm stuck with setting up file time stamp, also as per python gzip document , the syntax not working like gzip.GzipFile(filename=outputfile,mode='wb',compresslevel=9,mtime=ftime) , but when I used gzip.GzipFile(outputfile,'wb',9,mtime=ftime) it's working but except time stamp. def compresse_file(file,ftime): data = open(file,'rb') outputfile = file +".gz" gzip_file = gzip.GzipFile(outputfile,'wb',9,mtime=ftime) gzip_file.write(data.read()) gzip_file.flush() gzip_file.close() data.close() os

Gzip Byte Array not the same for C# and R

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问题 I'm using RserveCLI2 on C#. I tried to pass gzip byte array generated by R to C# so that C# can decompress it. However I'm not able to get it work. I did some comparison of the byte array generated by both R and C# when doing gzip compression of string "ABCDEF". Here are the results. # R gzip compression command and result > as.numeric(memCompress(charToRaw("ABCDEF"),"gzip")) [1] 120 156 115 116 114 118 113 117 3 0 5 126 1 150 # C-sharp gzipstream compress result byte[] data1 = Encoding.ASCII

Linux ==> 压缩与打包

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压缩与打包 Linux 底下有很多压缩文件名，常见的如下: 扩展名压缩程序 *.Z compress *.zip zip – – *.gz gzip *.bz2 bzip2 *.xz xz *.tar tar 程序打包的数据，没有经过压缩 *.tar.gz tar 程序打包的文件，经过 gzip 的压缩 *.tar.bz2 tar 程序打包的文件，经过 bzip2 的压缩 *.tar.xz tar 程序打包的文件，经过 xz 的压缩压缩指令 gzip $ gzip [ -cdtv #] filename -c ：将压缩的数据输出到屏幕上 -d ：解压缩 -t ：检验压缩文件是否出错 -v ：显示压缩比等信息 - # ： # 为数字的意思，代表压缩等级，数字越大压缩比越高，默认为 6 bzip2 提供比 gzip 更高的压缩比。查看命令：bzcat、bzmore、bzless、bzgrep $ bzip2 [ -cdkzv #] filename -k ：保留源文件 xz 查看命令：xzcat、xzmore、xzless、xzgrep. $ xz [ -dtlkc #] filename 打包压缩指令只能对一个文件进行压缩，而打包能够将多个文件打包成一个大文件。tar 不仅可以用于打包，也可以使用 gzip、bzip2、xz 将打包文件进行压缩。 $ tar [ -z |

Does case matter when 'auto' loading data from S3 into a Redshift table? [duplicate]

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问题 This question already has answers here : Loading JSON data to AWS Redshift results in NULL values (3 answers) Closed 2 years ago . I am loading data from S3 into Redshift using the COPY command, the gzip flag and the 'auto' format, as per this documentation on loading from S3, this documentation for using the 'auto' format in AWS, and this documentation for addressing compressed files. My data is a highly nested JSON format, and I have created the redshift table such that the column names