Four Cool Ajax Plugins for WordPress
This article discusses four Ajax plugins that can make your WordPress-based Web site more dynamic, friendly and fun for visitors. The only prerequisite is that you have an already-working WordPress installation (we used version 2.1) and, of course, a complete backup of it just in case something goes wrong.
When visitors click on these modified links, their browsers launch the scripts embedded in the AjaxWp code. These scripts then request the new page, all by themselves, in the background. In the meantime, the visitors' browsers will not go blank; the header, footer, sidebars—basically every part of your Web site that is common both to the current page and the one just requested—remain fully readable where they are.
The part to be replaced, and that only, gradually vanishes, and the block of new content takes its place as soon as the AjaxWp scripts have it ready. During this phase, to show that it is actually doing something, AjaxWp superimposes an animated GIF of a rotating wheel to the area it is replacing. The animation with which AjaxWp moves from the old page to the new one, courtesy of the Script.aculo.us library, can be set to appear, slide or blind.
How slowly or quickly all this happens depends on the speed of the Internet connection, the load on your Web server and the speed of your visitors' computers. If something goes wrong, after a programmable timeout, AjaxWp simply lets the browser load the page in the standard mode.
AjaxWp can work in two modes: Quick, which is easier to configure and use, or Optimized. Whichever mode you choose, the home page and the README file describe in detail all the actual steps of the installation procedure, but I summarize the main points here.
In Quick mode, every AjaxWp call requests a whole new page from the server and then extracts from it the single area that must be refreshed in the browser window. Other than the steps described above, you need to add only a few lines of PHP code to the header file of your WordPress theme to start using Quick AjaxWp.
Optimized mode is faster and more efficient, because only the pieces of the pages that have to change are requested from the server and dropped as they arrive in the right part of the browser window. To make this work, however, you have to create an AjaxWp version of your theme—that is, add to each of its pages the snippets of PHP code described in the on-line documentation. Depending on your theme, this may take a bit of tweaking to get right.
Whether you choose Quick or Optimized mode, don't forget to spend a few minutes checking the configuration variables of AjaxWp to adapt them to your taste and, more important, to your theme and general WordPress setup. The two most important options are ajax_wp_blog_base_path, which is the relative path from the root of your Web server to your WordPress installation folder, and the list of pages (ajax_wp_ignore_links) that should be loaded normally rather than through AjaxWp.
Articles about Digital Rights and more at http://stop.zona-m.net CV, talks and bio at http://mfioretti.com
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- SUSE LLC's SUSE Manager
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
- Google's SwiftShader Released
- Parsing an RSS News Feed with a Bash Script
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide