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Vladi Belperchinov-Shabanski

works at the Bulgarian electronic payment operator ePay.bg. He is a passionate Perl programmer for almost 10 years, former FreeCraft core developer, occasional Perl golfer, and avid progressive rock music fan.

Elements of Access Control
Some data is private. Other data, less so. Secure applications make it possible--and easy--to keep user data visible to the right people and invisible to the wrong people. Vladi Belperchinov explains how access control works and demonstrates with working code suitable for implementing your own access controls. [Feb 13, 2008]

Throwing Shapes
Sometimes data processing works best when you separate the application into multiple parts; this is the well-loved client-server model. What goes on between the parts, though? Vladi Belperchinov-Shabanski walks through the design and implementation of a Remote Procedure Call system in Perl. [Feb 3, 2005]

Implementing Flood Control
If the load of application relies on incoming events, you may eventually face the happy curse of popularity: too much work to do with your available resources. If you set a limit on how many events you can process within a time period, you can avoid the flood. Vladi Belperchinov-Shabanski explains the algorithm and demonstrates working code. [Nov 11, 2004]