CodeLens Processing pipeline performance improvements

This post details performance optimizations for the CodeLens Team Indicators processing pipeline in Team Foundation Server 2013 Update 3. Specifically, it addresses optimizations for changeset processing, particularly for branching and merging operations, and implements batched writing of temporary CodeLens data to reduce database and file service operations. Indicative performance improvements show over 70% reduction in run time for the Keepup and Aggregator jobs.