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@@ -150,7 +150,8 @@ An updated and curated list of selected readings to illustrate High Scalability,
 	* [Improving Search Engine Efficiency by over 25% at eBay](https://www.ebayinc.com/stories/blogs/tech/making-e-commerce-search-faster/)
 	* [Elasticsearch Performance Tuning Practice at eBay](https://www.ebayinc.com/stories/blogs/tech/elasticsearch-performance-tuning-practice-at-ebay/)
 	* [Nautilus: Travel Search Engine of Expedia](http://blog.expedia.com/expedias-nautilus-travel-search-engine-overview-and-applications/)
-	* [Galene: Search Architecture of LinkedIn](https://engineering.linkedin.com/search/did-you-mean-galene)
+	* [Galene: Search Architecture of LinkedIn (2014)](https://engineering.linkedin.com/search/did-you-mean-galene)
+	* [Search Federation Architecture at LinkedIn (2018)](https://engineering.linkedin.com/blog/2018/03/search-federation-architecture-at-linkedin)
 	* [Search at Slack](https://slack.engineering/search-at-slack-431f8c80619e)
 	* [Search Service (Half a Trillion Documents and Query Average Latency < 100ms) at Twitter (2014)](https://blog.twitter.com/engineering/en_us/a/2014/building-a-complete-tweet-index.html)
 	* [Manas: High Performing Customized Search System at Pinterest](https://medium.com/@Pinterest_Engineering/manas-a-high-performing-customized-search-system-cf189f6ca40f)