CSS has become a vital part of a web page. CSS file call or style placement can play important role in performance. If you care about performance of your web application, than you should see where to place your CSS. A CSS file or style should be placed in HEAD element of the page. It [...]
A web page have multiple objects like images, css, JavaScript and flash etc. Browser have to send one http request to the server for each object. Each request adds a round trip to the server. Server have to receive and process each request and send the response. For enhancing web application performance the rule is [...]
HTTP protocol have many features built-in which can help in improving front end performance of a web application. In this post we will look into these features and see how they can be used to improve performance. The features include (find details below) 304 Not Modified requests Expires header Keep-Alive Compression 304 Not Modified requests [...]
Web application performance is increasingly becoming important aspect in web based business. Awareness about faster websites is increasing. Recently website speed has been added to ranking criteria of Google, most of the other search engines should be following soon. Optimizing website performance includes optimization of different aspects of a site, ranging from image optimization to [...]
Web server performance is a major hurdle in any web application performance. Apache web server is a great web server to serve static and dynamic pages. Combined with PHP, it becomes a winning combination, powering millions of websites around the globe. As PHP pages are compiled than executed for each and every request, it consumes [...]
eAccelerator is a free, open source PHP accelerator, optimizer, and dynamic content cache, used to improve web server performance. It is a great tool which does not require change is existing php code. It stores PHP files in compiled state in shared memory and on next request it serves the request from compiled state cache. [...]
Apache 2.2 has been out in year 2008, and just recently, 2.2.13 was released, enhancements and bug fixes introduced. Happily, 2.0 users are migrating to 2.2 due to the excellent performance on static pages. Here, More exciting innovations found in 2.2 and perhaps peek at one or two of the more esoteric ones. These changes [...]
To test performance of your web application there are several free sites available. Here are few you can try WebPageTest.org: My personal favorite, and used by me. Gives multiple locations, waterfall view of requests and good optimization tips to improve web application performance. PingDom.com: Gives basic tests for free, I don’t like is personally because [...]
A cache is a temporary collection of data where the original data is expensive to compute or read as compared to reading from the cache. In other words, a cache is a temporary storage area where frequently accessed data can be stored for rapid access. Cache give two great advantages Significantly reduces the number of [...]
Most WordPress themes use a number of images, js and other static contents. By default these static content are not cached so they are downloaded again on each request. This makes web page response very slow. This can be improved by using browser cache. To enable browser cache you need do as below 1 – [...]