Skip to main content

HTTP Compression and Performance tuning

With the advancement of technology and exceeding expectations of users, one has to be very careful designing a website. Performance is one of the key elements for success of an application. Even if, you have designed the application with uttermost care and rock solid architecture, there are few key areas in which you have to be really vigilant. HTTP Compression is one of those pivotal spaces.

HTTP compression is the technique to compress static and dynamic content which improves the transfer speed and performance of a website.

Steps to keep the compression ON for a website. Here the demonstration is given for IIS based website.
1. Open IIS (inetmgr)
2. Goto website. Right side will show all components of that website
3. Click on 'Compression' module and verify that both the checkboxes are checked if you need static and dynamic content to be compressed.




4. Click 'Mime Types' and check 'application/x-javascript' is added in the existing mime types. If not, add it.
5. Reset IIS, browse website and verify that JS is getting compressed now.

Web.Config Settings
Here are all the mime types and gzip information which should exist for a website if compression needed, either in IIS settings or in web.config.
Note: Include it in web.config if configuration file also get deployed with every build.

 Section to include in <system.webserver></system.webserver>
<system.webServer>
<httpCompression> 
  <staticTypes> 
    <add mimeType="text/*" enabled="true" /> 
    <add mimeType="message/*" enabled="true" /> 
    <add mimeType="application/javascript" enabled="true" /> 
    <add mimeType="application/x-javascript" enabled="true" /> 
    <add mimeType="image/jpeg" enabled="true" /> 
    <add mimeType="*/*" enabled="false" /> 
  </staticTypes> 
  <dynamicTypes> 
    <add mimeType="text/*" enabled="true" /> 
    <add mimeType="message/*" enabled="true" /> 
    <add mimeType="application/javascript" enabled="true" /> 
    <add mimeType="application/x-javascript" enabled="true" /> 
    <add mimeType="image/jpeg" enabled="true" /> 
    <add mimeType="*/*" enabled="false" /> 
  </dynamicTypes> 
  <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" dynamicCompressionLevel="4" /> 
</httpCompression>
</system.webServer>

After compression is ON:
Response header of a JS file being loaded in website. 'Content-Encoding: gzip' shows that it is compressed.



Useful tools
There are several webistes which can help you detect, if your website/CSS/JS is compressed or not. You should check css/js or website seperately to make sure that all static medias are compressed. One of the examples website is given here.
Check Compression

For further detail, you can contact me www.bajajsumit.com. Please share your feedback if you find the article useful.

Comments

Post a Comment

Popular posts from this blog

Nutch crawler and integration with Solr

Before moving ahead with this article, I assume you have Solr installed and running. If you would like to install Solr on windows, mac or via docker, please read Setup a Solr instance . There are several ways to install nutch which you can read from Nutch tutorial , however I have written this article for those who would like to install nutch using docker. I tried finding help on google but could not find any help for nutch installation using docker and spent good amount of time fixing issues specific to it. Therefore I have written this article to help and save time of other developers. Install nutch using docker- 1. Pull docker image of nutch using below command,      > docker pull apache/nutch 2. Once image is pulled, run the container,      > docker run -t -i -d --name nutchcontainer apache/nutch /bin/bash 3. You should be able to enter in the container and see bash prompt,      > bash-5.1#  Let's setup few important setting...
3 comments
Read more

AJAX Progrraming

Ajax , shorthand for Asynchronous JavaScript and XML , is a web development technique for creating interactive web applications. The intent is to make web pages feel more responsive by exchanging small amounts of data with the server behind the scenes, so that the entire web page does not have to be reloaded each time the user requests a change. This is meant to increase the web page's interactivity, speed, and usability. The Ajax technique uses a combination of: XHTML (or HTML) and CSS, for marking up and styling information. The DOM accessed with a client-side scripting language, especially JavaScript and JScript, to dynamically display and interact with the information presented. The XMLHttpRequest object is used to exchange data asynchronously with the web server. In some Ajax frameworks and in certain situations, an IFrame object is used instead of the XMLHttpRequest object to exchange data with the web server, and in other implementations, dynamically added tags may be used. ...
131 comments
Read more

Call a custom Script from Excel

  It is quite common that we receive the data in Excel and several times we have to remove unwanted characters from columns or modify the data as per the requirement. To avoid manual fixes of these kind of requirements, we may use Macro to automate the process which not only increase productivity but also avoid manual errors. We can easily create Macro to quickly fix it. Here are the steps to create Macro and run it. Open Excel Goto View tab on Main menu Click on 'View Macros'. This should open a Macro popup. Enter Macro Name and click on + icon. Clicking on + icon should open Macro Coding screen(as shown below). Add your code in the function. Click on Save icon to save the file with Macro. Click on Run icon to run the Macro code. The above code should remove additional line breaks from columns. Reference Code(to remove line breaks from columns): Sub MyCustomMacro () Dim MyRange As Range Application . ScreenUpdating = False Application . Calculation = xlCa...
Post a Comment
Read more