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Metadata-Driven Design: Designing a Flexible Engine for API Data Retrieval
Bulk data is commonly accessed via files & FTP. As the world moves toward APIs to facilitate collaboration, what are the requirements for data APIs? This article describes a meta-data driven architecture for bulk data ingestion. Two APIs operate in parallel to provide data changes as well as the data records themselves. An example demonstrates how API responses are parameterized using meta-data.
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Expression as a Compiler
The ability to dynamically generate code can greatly increase the expressiveness of developers. Repetitive code can be eliminated and complex decisions be pushed back to configuration files that can be changed by business analysts. In the past .NET developers built dynamic code using Reflection.Emit or CodeDom, but with LINQ Expressions a lightweight alternative has become available.
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Aaron Erickson on LINQ and i4o
Aaron Erickson introduces his new LINQ extension Indexes for Objects (i4o). Indexes for Objects allows for fast lookup against in-memory collections while retaining the LINQ syntax and semantics. He also discusses how expression trees interact with LINQ and how they can be leveraged in other scenarios.