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Intro

This web-site explores the idea that data has a dual nature - a stream (flow) and a particle (id) - an idea inspired from physics that light has the dual nature - wave and particle. It is collection of design notes on multiple, seemingly unrelated, topics that follow from this core assumption.

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Performance Testing a New CRM

Performance testing  is challenging, frustrating, often underestimated typically getting attention only after an incident. How did we the performance test and what did we learn during the development and implementation of  web-services for a new CRM system?
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On Defining Messages

“Defining Message Formats” is the title of a message posted on the Service Oriented Architecture mailing list [1]  which attracted a lot of attention.  The post summarizes  the dilemma faced by solution architects when they have to define a service interface: 1. Base the internal message format on the external message standard (MISMO for this industry). This message set is bloated, but is mature, supports most areas of the business, and is extensible for attributes specific to this company and its processes. 2. Create an XML-based message set based on the company's enterprise data model, which the company has invested a great amount of money into, and includes a very high percentage of all attributes needed in the business. In a nutshell, we've generated an XML Schema from ER Studio, and will tinker with that construct types that define the payloads for messages. 3. Use MISMO mainly for its entity definitions, but simplify the structure to improve usability. We benefit from the
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On Data Consistency Pattern

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