Messages sind heutzutage überall. Egal ob JavaScript Frontends in Form von Events, oder Backends mit Kafka oder NATS Message Queues, wir wollen zwei Ziele erreichen, Separation of Concerns (unabhängige Einheiten) und Skalierbarkeit (oder in Frontends Freigabe von Resourcen). Da heute alles Responsive sein muss, brauchen wir Event-basierte Systeme. Also lasst uns gemeinsam die darunterliegenden Systeme erforschen, verstehen und Einsatzbereiche erarbeiten.

1. Event Driven Architectures
Don’t Puoll On Me!
@timescaledb

2. Chris Engelbert
Developer Advocacy @TimescaleDB
Previous fun companies:
- Ubisoft / Blue Byte
- Hazelcast
- Instana
- clevabit
Interests:
- Developer Relations
- Anything Performance Engineering
- Backend Technologies
- Fairy Tales (AMD / Intel, AMD / Nvidia, AMD / Nvidia)
@noctarius2k

3. What is Event Driven?

13. What is Time-Series?

14. https://www.theatlantic.com/sponsored/thomson-reuters-davos/ensuring-trust-in-
fi
nancial-transactions-for-the-21st-century/759/
Financial Transactions

15. https://www.theatlantic.com/sponsored/thomson-reuters-davos/ensuring-trust-in-
fi
nancial-transactions-for-the-21st-century/759/
Stocks Prices

16. Internet of Things Measurements

17. Observability Metrics

18. Service Traces

19. User Behavior

20. https://www.deviantart.com/jonahptak
Marvel Timeline

21. Time-Related Observations
of a
Subject

22. Time-Related Observations
of a
Subject
CREATE TABLE stocks (
time TIMESTAMPTZ NOT NULL,
price INT NULL,
symbol TEXT NULL
);

23. Time-Related Observations
of a
Subject
CREATE TABLE measurements (
time TIMESTAMPTZ NOT NULL,
deviceID INT NULL,
sensor_value REAL NULL,
location geometry NULL
);
CREATE TABLE stocks (
time TIMESTAMPTZ NOT NULL,
price INT NULL,
symbol TEXT NULL
);

24. Event Driven Design Pattern

25. 👂
Subscriber
Publisher
📢

26. 👂
Consumer
Producer
📢

27. 👂
Observer
Observable
📢

28. MSG 5
MSG 4
MSG 3
MSG 2
MSG 1
Queue / Topic
Publisher
📢 👂
Subscriber

29. Publisher
📢 👂
👂
👂
Subscriber Group

30. Publisher
📢
👂
👂
👂
Subscriber Group 2
👂
👂
👂
Subscriber Group 1

31. A | B | C | D
Ingress Events

32. A | B | C | D
A | B | C | D A | B | C | D A | B | C | D A | B | C | D
Ingress Events
Subscriber 1 Subscriber 2 Subscriber 3 Subscriber 4

33. A | B | C | D
A B C D
Ingress Events
Subscriber Group 1 Subscriber Group 1 Subscriber Group 1 Subscriber Group 1

34. A | B | C | D
A | C B | D A | C B | D
Ingress Events
Subscriber Group 1 Subscriber Group 1 Subscriber Group 2 Subscriber Group 2

35. Function 1
Function 2
Function 3
Call Stack
Other
Mutation Observer
Browser API
Promise
setInterval
AJAX
setTimeout Style Recalculate
Render
Paint
Layout
RAF
Tasks Microtasks
Render
Render Queue
Tasks Queue
Microtasks Queue

36. https://medium.com/preezma/node-js-event-loop-architecture-go-deeper-node-core-c96b4cec7aa4

37. https://fuelinternational.freshdesk.com/en/support/solutions/articles/9000144358-there-is-a-page-unresponsive-message-on-the-screen

38. https://fuelinternational.freshdesk.com/en/support/solutions/articles/9000144358-there-is-a-page-unresponsive-message-on-the-screen

39. https://fuelinternational.freshdesk.com/en/support/solutions/articles/9000144358-there-is-a-page-unresponsive-message-on-the-screen

40. https://fuelinternational.freshdesk.com/en/support/solutions/articles/9000144358-there-is-a-page-unresponsive-message-on-the-screen
At-Most-Once At-Least-Once Exactly-Once

41. https://fuelinternational.freshdesk.com/en/support/solutions/articles/9000144358-there-is-a-page-unresponsive-message-on-the-screen
Retention Durability Fault Tolerance

42. Event Emitters
APNS

43. Examples

57. https://en.wikipedia.org/wiki/Co
ff
ee#/media/File:Latte_and_dark_co
ff
ee.jpg

58. Thank
You!
www.timescaledb.com
@timescaledb
@noctarius2k
Questions?