This document provides an overview and summary of Apache Pulsar with MQTT for edge computing. It discusses how Pulsar is an open-source, cloud-native distributed messaging and streaming platform that supports MQTT and other protocols. It also summarizes Pulsar's key capabilities like data durability, scalability, geo-replication, and unified messaging model. The document includes diagrams showcasing Pulsar's publish-subscribe model and different subscription modes. It demonstrates how Pulsar can be used with edge devices via protocols like MQTT and how streams of data from edge can be processed using connectors, functions and SQL.

1. Apache Pulsar with MQTT for
Edge Computing
Timothy Spann | Developer Advocate
Big Mountain Data and Dev Conference

2. Tim Spann
Developer Advocate
● https://www.datainmotion.dev/
● https://github.com/tspannhw/SpeakerProfile
● https://dev.to/tspannhw
● https://sessionize.com/tspann/
DZone Zone Leader and Big Data
MVB Data DJay

3. Founded by the original developers of
Apache Pulsar and Apache BookKeeper,
StreamNative builds a cloud-native event
streaming platform that enables
enterprises to easily access data as
real-time event streams.

4. Apache Pulsar

5. Apache is an open source, cloud-native
distributed messaging and streaming platform.

6. What are the Benefits of Pulsar?
Data Durability
Scalability Geo-Replication
Multi-Tenancy
Unified Messaging
Model

7. Apache Pulsar

8. A Unified Messaging Platform
Message Queuing
Data Streaming

9. Pulsar is built for easy scale-out.
*Illustrations by Jack
Vanlightly

10. Key Milestones
2012 2016 2017 2018 2019 2020
Originally developed
inside Yahoo! as “Cloud
Messaging Service”
Pulsar is
committed to
Open Source
Pulsar is accepted into
the Apache Software
Foundation
Pulsar
becomes a
Top-Level
Project
● StreamNative is founded and
seed round raised.
● Tencent adopts Pulsar for
payment processing platform.
● BestPay adopts Pulsar for
payment processing.
● Pulsar hits 200 contributors.
● 2 global Pulsar conferences, 80+ speakers, 1,500+ attendees
● Pulsar hits 340 contributors
● StreamNative and OVHCloud launch Kafka on Pulsar (KoP)
● StreamNative + China Mobile launch AMQP on Pulsar (AoP)
● Pulsar Ecosystem expands - StreamNative Hub launches
● StreamNative Cloud launches on GCP and Alibaba Cloud
● StreamNative customer adoption continues - new
customers include Flipkart and Applied Materials
● Pulsar 2.7 + Transactions
● Pulsar Flink Connector 2.7
Major increase in adoption following
TLP designation in 2018
2021
● 3 global Pulsar conferences
● StreamNative hits 400
contributors (June).
● Pulsar surpasses Kafka in
monthly active contributors.
● Pulsar 2.8 + Exactly-Once
semantics
● StreamNative Platform launches

11. Apache Pulsar Overview
Enable Geo-Replicated Messaging
● Pub-Sub
● Geo-Replication
● Pulsar Functions
● Horizontal Scalability
● Multi-tenancy
● Tiered Persistent Storage
● Pulsar Connectors
● REST API
● CLI
● Many clients available
● Four Different Subscription Types
● Multi-Protocol Support
○ MQTT
○ AMQP
○ JMS
○ Kafka
○ ...

12. Pulsar’s Publish-Subscribe model
Broker
Subscription
Consumer 1
Consumer 2
Consumer 3
Topic
Producer 1
Producer 2
● Producers send messages.
● Topics are an ordered, named
channel that producers use to
transmit messages to subscribed
consumers.
● Messages belong to a topic and
contain an arbitrary payload.
● Brokers handle connections and
routes messages between producers
/ consumers.
● Subscriptions are named
configuration rules that determine
how messages are delivered to
consumers.
● Consumers receive messages.

13. What is the Pulsar Ecosystem?
● Functions and Connectors
○ Functions: Lightweight stream processing
○ Connectors: Part of “Pulsar IO”, includes “Source” and “Sink”
APIs
■ Files, Databases, Data tools, Cloud Services, etc
● Protocol Handlers
○ Allows Pulsar to handle additional protocols by an extendable
API running in the broker
■ AoP (AMQP), KoP (Kafka), MoP (MQTT)

14. Topics
Tenants
(Compliance)
Tenants
(Data Services)
Namespace
(Microservices)
Topic-1
(Cust Auth)
Topic-1
(Location Resolution)
Topic-2
(Demographics)
Topic-1
(Budgeted Spend)
Topic-1
(Acct History)
Topic-1
(Risk Detection)
Namespace
(ETL)
Namespace
(Campaigns)
Namespace
(ETL)
Tenants
(Marketing)
Namespace
(Risk Assessment)
Pulsar Instance
Pulsar Cluster

15. Pulsar subscription modes
Different subscription modes
have different semantics:
Exclusive/Failover - guaranteed
order, single active consumer
Shared - multiple active
consumers, no order
Key_Shared - multiple active
consumers, order for given key
Producer 1
Producer 2
Pulsar Topic
Subscription D
Consumer D-1
Consumer D-2
Key-Shared
<
K
1,
V
10
>
<
K
1,
V
11
>
<
K
1,
V
12
>
<
K
2
,V
2
0
>
<
K
2
,V
2
1>
<
K
2
,V
2
2
>
Subscription C
Consumer C-1
Consumer C-2
Shared
<
K
1,
V
10
>
<
K
2,
V
21
>
<
K
1,
V
12
>
<
K
2
,V
2
0
>
<
K
1,
V
11
>
<
K
2
,V
2
2
>
Subscription A Consumer A
Exclusive
Subscription B
Consumer B-1
Consumer B-2
In case of failure in
Consumer B-1
Failover

16. Reader and Batch
API
Pulsar
IO/Connectors
Stream Processor
Applications
Prebuilt Connectors Custom Connectors
Microservices or
Event-Driven Architecture
Pub/Sub
API
Publisher
Subscriber
Admin
API
Operators &
Administrators
Teams
Tenant
Pulsar API
Design

17. What is the Pulsar Ecosystem? (cont’d)
● Processing Engines
○ Supports modern processing engines
■ Flink and Spark, as well as Pulsar SQL (Presto/Trino)
● Offloaders
○ Allows data to be offloaded to cloud storage and used with
existing Pulsar APIs
■ S3, GCP Cloud Storage, HDFS, File (NFS), Azure Blob Storage
(in Pulsar 2.7.0)

18. MQTT on Pulsar (MoP)

19. MQTT on Pulsar (MoP) Configuration
messagingProtocols=mqtt
# directory
protocolHandlerDirectory=./protocols
#mqtt 3.1.1 - port / ip
mqttListeners=mqtt://127.0.0.1:1883
advertisedAddress=127.0.0.1

20. Kafka-on-Pulsar (Kop)

21. Pulsar Functions
Provides a simple API to:
● Receive a message (consume)
● Process the message using your own code
● Send a message (produce)
Takes care of the boilerplate code so there is no need to create
producers and consumers.

22. Moving Data In and Out of Pulsar
IO/Connectors are a simple way to integrate with external systems and move data
in and out of Pulsar.
● Built on top of Pulsar Functions
● Built-in connectors - hub.streamnative.io
Source Sink

23. Use Azure BlobStore offloader with
Pulsar
https://pulsar.apache.org/docs/en/tiered-storage-azure/

24. 24
streamnative.io
Apache Pulsar - Other Sinks
https://hub.streamnative.io/connectors/cloud-storage-sink/2.5.1/
mongoDB
AWS Lambda
redis
AWS S3
GCS

25. Ingesting IoT Data via Java Pulsar
https://github.com/tspannhw/StreamingAnalyticsUsingFlinkSQL/

26. Ingesting IoT Data via Java Pulsar

27. Pulsar SQL
Presto/Trino workers
can read segments
directly from bookies
(or offloaded storage)
in parallel.
Bookie
1
Segment 1
Producer Consumer
Broker 1
Topic1-Part1
Broker 2
Topic1-Part2
Broker 3
Topic1-Part3
Segment 2 Segment 3 Segment 4 Segment X
Segment 1
Segment 1 Segment 1
Segment 3 Segment 3
Segment 3
Segment 2
Segment 2
Segment 2
Segment 4
Segment 4
Segment 4
Segment X
Segment X
Segment X
Bookie
2
Bookie
3
Query
Coordinator
...
...
SQL Worker SQL Worker SQL Worker
SQL Worker
Query
Topic
Metadata

28. Query Your Topics with Pulsar SQL (Trino)

29. StreamNative
Cloud

30. Powered by Apache Pulsar, StreamNative provides a cloud-native,
real-time messaging and streaming platform to support multi-cloud
and hybrid cloud strategies.
Built for Containers
Cloud Native
StreamNative Cloud
Flink SQL

32. Best Practice
Architectures

33. StreamNative Hub
StreamNative Cloud
Unified Batch and Stream COMPUTING
Batch
(Batch + Stream)
Unified Batch and Stream STORAGE
Offload
(Queuing + Streaming)
Apache Flink - Apache Pulsar - Apache NiFi <-> Events <-> Azure Data Stores
Tiered Storage
Pulsar
---
KoP
---
MoP
---
Websocket
---
HTTP
Pulsar
Sink
Pulsar
Sink
Streaming
Edge Gateway
Protocols
End-to-End Streaming FLiP(N) Apps

34. Demo

35. NVIDIA Device

36. MQTT from Python
pip3 install paho-mqtt
import paho.mqtt.client as mqtt
client = mqtt.Client("rpi4-iot")
row = { }
row['gasKO'] = str(readings)
json_string = json.dumps(row)
json_string = json_string.strip()
client.connect("pulsar-server.com", 1883, 180)
client.publish("persistent://public/default/mqtt-2", payload=json_string,
qos=0, retain=True)

37. 37
Using NVIDIA Jetson Devices With Pulsar
https://dev.to/tspannhw/unboxing-the-most-amazing-edge-ai-devic
e-part-1-of-3-nvidia-jetson-xavier-nx-595k
https://github.com/tspannhw/minifi-xaviernx/
https://github.com/tspannhw/minifi-jetson-nano
https://github.com/tspannhw/Flip-iot
https://www.datainmotion.dev/2020/10/flank-streaming-edgeai-on-
new-nvidia.html
https://github.com/tspannhw/FLiP-Mobile/blob/30bcc1ec98fc31e0
39b51a06180d98545c1e0542/python3/enviro.py

38. Demo Walkthrough
{"entriesAddedCounter":1,"numberOfEntrie
s":1,"totalSize":651,"currentLedgerEntries":1,"
currentLedgerSize":651,"lastLedgerCreated
Timestamp":"2021-09-13T16:13:06.6-04:00","
waitingCursorsCount":0,"pendingAddEntri
esCount":0,"lastConfirmedEntry":"7076:0","
state":"LedgerOpened","ledgers":[{"ledgerId
":7076,"entries":0,"size":0,"offloaded":false,"u
nderReplicated":false}],"cursors":{},"schema
Ledgers":[],"compactedLedger":{"ledgerId":
-1,"entries":-1,"size":-1,"offloaded":false,"unde
rReplicated":false}}

39. Wrap-Up

40. Connect with the Community & Stay Up-To-Date
● Join the Pulsar Slack channel - Apache-Pulsar.slack.com
● Follow @streamnativeio and @apache_pulsar on Twitter
● Subscribe to Monthly Pulsar Newsletter for major news, events,
project updates, and resources in the Pulsar community

41. ● https://github.com/tspannhw/FLiP-Energy/
● https://github.com/tspannhw/Flip-iot
● https://github.com/tspannhw/Flip-jetson
● https://github.com/streamnative/pulsar-flink
● https://github.com/streamnative/mop
● https://www.linkedin.com/pulse/2021-schedule-tim-spann/
● https://github.com/tspannhw/FLiP-InfluxDB/blob/main/README.md
● https://streamnative.io/en/blog/release/2021-04-20-flink-sql-on-streamnative-cloud
● https://docs.streamnative.io/cloud/stable/compute/flink-sql
Deeper Content
@PaasDev
https://www.pulsardeveloper.com/
timothyspann

42. Interested In Learning More?
Flink SQL Cookbook
The Github Source for Flink
SQL Demo
The GitHub Source for Demo
Manning's Apache Pulsar in
Action
O’Reilly Book
[10/21] Trino Summit
Resources Free eBooks Upcoming Events

43. 43
Pulsar Summit Asia
November 20-21, 2021
Contact us at partners@pulsar-summit.org to become a sponsor or partner

45. Let’s Keep
in Touch!
Speaker Name
Speaker title
@PassDev
https://www.linkedin.com/in/timothyspann
https://github.com/tspannhw

46. Questions

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