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At the SQL PASS conference last November, we announced the In-memory OLTP database technology (code-named “Hekaton”) for a future SQL Server release. Microsoft’s technical fellow Dave Campbell’s blog provided a broad overview of the motivation and design principles behind the technology and discussed four architectural principles: (1) optimize for main memory data access, (2) Accelerate business logic processing, (3) Provide frictionless scale-up, (4) Built-in to SQL Server. This post will focus on the components behind the first three principles – both the motivation for the new components and how they achieve efficiency and scaling integral to the first three principles. MORE