Concurrent user updating stock with php
The SQL Database service on Bluemix offers an instance of IBM DB2 that you can bind and use immediately in your application.
The current free beta plan offers an instance that supports up to 10 concurrent connections and 100 MB; other plans offer options up to 500GB and 100 concurrent connections.
Here’s an example of what I mean (the code must also have PHPDoc comments and properly declared fields but for brevity, I have omitted these): The first static method, init, is hooked into one of many available launch points like plugins_loaded, after_setup_theme, or init.
Because these actions happen before everything else a second static method, hooks, can do the rest of the work from inside the object itself.
Given the rapid evolution of technology, some steps and illustrations may have changed.
We are now in the process of updating this tutorial.
Congratulations — you've completed the Bluemix fundamentals!
One of the weirder things I read as a Word Press Plugin developer are tips such as This advice is to prevent code collisions with the other 53,123 Plugins available for Word Press. On the other hand, Packagist lists 164,796 PHP Composer packages, does not follow the aforementioned recommendations and has no such code collisions. If my class is a bunch of static methods and nothing else then I am doing it wrong. If I’m afraid of function name collisions then I should use Namespaces because they solve that exact problem and they work fine with Word Press. There is some object-oriented approach to the design but most of the methods are static because they hook into actions and filters.
I think that an object in a Word Press Plugin should have, at most, two static methods.
This architecture enables you to scale your application to an increasing number of users simply by increasing the number of application instances.
Here's a quick overview of how you'll work with Bluemix in this tutorial to add an SQL database service to your Bluemix application.