aljoscha commented on a change in pull request #12559:
URL: https://github.com/apache/flink/pull/12559#discussion_r437901330
##########
File path: docs/concepts/timely-stream-processing.md
##########
@@ -24,17 +24,25 @@ specific language governing permissions and limitations
under the License.
-->
-`TODO: add introduction`
-
* This will be replaced by the TOC
{:toc}
+## Introduction
+
+Timely steam processing is an extension of [stateful stream processing]({% link
+concepts/stateful-stream-processing.md %}) in which time plays some role in the
+computation. Among other things, this is the case when you do time series
+analysis, when doing aggregations based on certain time periods (typically
+called windows), or when you do event processing where the time when an event
+occured is important.
+
+In the following sections we will highlight some of the topics that you should
+consider when working with timely Flink Applications.
+
Review comment:
I moved it after the toc because @StephanEwen recently mentioned that he
puts the toc first, without an intro before. We should decide on one way of
doing it and stick to it. What do you two think?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
