Add new sponsor to chapter 0

Author: bobbyiliev

ebook/en/content/000-about-the-author.md

@@ -20,6 +20,12 @@ For more information, please visit my blog at [https://bobbyiliev.com](https://b
 
 This book is made possible thanks to these fantastic companies!
 
+### Materialize
+
+The Streaming Database for Real-time Analytics.
+
+[Materialize](https://materialize.com/) is a reactive database that delivers incremental view updates. Materialize helps developers easily build with streaming data using standard SQL.
+
 ### DigitalOcean
 
 DigitalOcean is a cloud services platform delivering the simplicity developers love and businesses trust to run production applications at scale.