May 8, 2019 at a meeting of the Moscow community of Java-developers
jug.msk.ru Victor Gamow told about
Kafka Streams IQ (
Interactive Queries ).

About speaker
Victor speaks for the fourth time at
jug.msk.ru , his previous reports were about
Nashorn (
November 13, 2014 ),
Hazelcast (
May 4, 2016 ),
Apache Kafka (
April 23, 2018 ). Like a year ago, currently working at
Confluent , but now as a
Developer Advocate .
Co-founder and host of the popular podcast
Debriefing , co-author of the book
Enterprise Web Development , speaker of many conferences (including those organized by
JUG.ru Group ).
Victor's site (with a
technical blog in the same place),
video reports on
YouTube , presentation files on
Speaker Deck and
Notist ,
Habr ,
Twitter and
GitHub .
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Some reports made since the last appearance on
jug.msk.ru :
- “Kafka on Kubernetes: the mysterious story of creating a cloud-based threading platform” ( DevOops 2018 : presentation )
- "Java Puzzlers NG S03: What? Where Did Those Come From ?! ”(with Baruch Sadogursky on Oracle Code One 2018 : video )
- "Fight Crime with Kafka Streams and the Bintray Firehose API" (with Baruch Sadogursky on Oracle Code One 2018 : video , presentation )
- Crossing the Streams: Rethinking Stream Processing with KStreams and KSQL ( DevNexus 2019 : Presentation )
- “Kafka on Kubernetes: Does The Hard Way”? ”( Kafka Summit 2019 : presentation )
About the report
Traditionally, before the presentation of the speaker and the beginning of the meeting, Andrei Kogun recalls about the upcoming events -
applications for the
Joker Java conference (St. Petersburg, October 25-26) are
open and the
TechTrain IT festival (St. Petersburg, 24-25) is expected to be held for the second time August).

The report was dedicated to
Interactive Queries , part of
the Kafka Streams API , which provides access to the intermediate state of the application and the results obtained without using traditional databases and repositories.

Presentation slide show alternated with sample code demonstrations. A large number of questions were asked, to which Victor instantly gave exhaustive answers, which is confirmed by the
responses on Twitter .

The discussion continued both at the break of the meeting and after it. The meeting was attended by one of the speakers of the
JUG.ru conferences
, Ivan Ponomarev, whose recent report at the
JPoint 2019 conference “Kafka Streams API: a step beyond Hello World” (
presentation , video is currently available only to conference participants) can be complemented by Viktor.
Presentation of the report ,
code of examples , video will appear soon (see links below).
Links on
jug.msk.ru :
- TimePad - announcements of meetings and registration for them, a subscription to the notification by mail about meetings
- YouTube - video reports
- Speaker Deck - presentations
- VK - meeting announcements, photo reports, links to past meeting materials
- Twitter : account (announcements of meetings, photo reports, video) and hashtag (tweets with comments about meetings)
- Habr - reviews of meetings, you can find all reviews by tag