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Free 321 page eBook that covers execution plan basics, how to interpret plans, complex queries, and how to optimize execution plans. 

C/C++ tip: How to loop through multi-dimensional arrays quickly 

10x faster and 90% memory reduction compared to Microsoft's immutable collections 

RyuJIT CTP5: Getting closer to shipping, and with better SIMD support 

Find Debug Assemblies using Glimpse 

it takes roughly 31 seconds to de-serialise the data from disk and another 3 1/2 minutes to process and sort it. At the end we are using roughly 4.5GB of memory.

High performance lazy loader for images (responsive and normal)