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 # Полезные ссылки по теме
 
+1. Watermarks - Practical Tool for Any Streaming and Event Processing Application by Christian Tzolov
+
 [![IMAGE_ALT](https://img.youtube.com/vi/zMgK_u_ELk8/0.jpg)](https://youtu.be/zMgK_u_ELk8)
+
+2. Дополнительные задачи для практики https://github.com/apache/flink-playgrounds.
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