personal blog of travels, tech & opinions
Category
Programming and software
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Problem: For a recent project I needed to get the latest exchange rates to allow the sales folks to quickly calculate costs while doing estimates in different currencies. There are many sites online where you can do this, but we wanted to create an in-app widget that could be re-used…
Most web hosts have the ability via their control panel to offer an entire site backup , and this is the minimal functionality you should consider. Generally there’s a site backup link within the control panel that create a tar ball (.zip file) of the entire site and its contents. then…
One of the minor challenges of creating a web application , is to indicate that something was successfully or unsuccessfully completed when transitioning to a new page or screen. I find it’s very important and reassuring to let user’s know what has happened , whether it worked or whether there was a problem. Typically…
HTML5 Gaming I’m beginning to look into various html5 javascript game and graphics frameworks. The toughest part is always choosing a good framework in the beginning, since its such a time investment to learn a new API , plus hope that the framework is popular enough so bugs are fixed quickly and…
Below are some interesting problems and solutions that I have come accross. Problem: In a web based system how to you prevent simultaneous web updates (aka overwrites) to the same record by different users seeing potentially different data. This is a play on the old airline reservation problem you find in older…
Here’s a variation of a PHP caching script. One of the things I frequently find myself doing for page(s) that take a long time to render, especially if they are a long running process, is to generally save a recent cached page (or more specifically) cached content and serving that up, when I need…
Below are some interesting problems and solutions that I have come accross. Problem: In a web based system how to you prevent multiple updates to the same record by different users seeing potentially different data. This is a play on the old airline reservation problem you find in older computer science text…