update docs to add blog link
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- <a href="https://www.datatorrent.com/blog/dimensions-computation-aggregate-navigator-part-2-implementation/" rel="nofollow">Dimensions Computation - Part 2: Implementation</a> The second part continues with discussion of the three phases involved (_pre-aggregation_, _unification_ and _storage_) the JSON schema to encapsulate the various keys and aggregates, code fragments and, finally, concludes with visualization of the results.
- <a href="https://www.datatorrent.com/blog/blog-apex-performance-benchmark" rel="nofollow">Apache Apex Performance Benchmarks</a> Discusses the performance suite used to certify releases.
- <a href="https://blogs.apache.org/foundation/entry/celebrating_17_years_of_the">Apache Software Foundation</a> Discusses the history of the foundation, guiding principles, current statistics and provides numerous additional links for details of how the foundation operates and is managed.
+- <a href="https://techblog.xavient.com/real-time-data-ingestion-dip-apache-apex-co-dev-opportunity">Data Ingestion Platform - Xavient Information Systems</a> Discusses usage of Apache Apex in their data ingestion platform.
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