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@salaboy - Spring I/O - Barcelona 2023
Spring Boot in a Polyglot Cloud-
Native World
With Dapr
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Agenda
• Our Spring Boot Cloud-Native Applications
• Common patterns and abstractions
• The relationship betwee apps and infra
• Kubernetes = Deploy + Run
• Platform Building in the Cloud-Native Space
• Platform Capabilities
• Dapr on K8s
• Dapr and TestContainers
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MAURICIO SALATINO / WWW.SALABOY.COM
@SALABOY
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PLATFORMS ON K8S
40% DISCOUNT: SALATINO40
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PLATFORMS ON K8S
SALATINO40 😢 😢 😢 😢 😢 😢
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#1: How many Java
Developers are in
the room?
Time: 10
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#1: How many Java
Developers are in
the room?
Time: 8
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#1: How many Java
Developers are in
the room?
Time: 5
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#1: How many Java
Developers are in
the room?
Time: 3
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#1: How many Java
Developers are in
the room?
Time Out!
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Fetching results
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Fetching results….
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Fetching results………
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Fetching results………..…
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Fetching
results………………
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Java Developers
Java/Spring Developers: 80%
Others (WASM, C (””,#,++), Go, Flash): 20%
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#2: Do you have
more than one
Application?
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Applications
One App -> 30%
More than one -> 70%
No Apps -> ??
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#3: Does your
applications read or
write data?
(From storage, db, files, buckets)
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Data? Or no Data?
Most of them -> 70%
Nope -> 20%
I don’t understand the question -> 10%
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#4: Does your
applications consume or
emit events/messages?
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Async Messages
Some of them -> 30%
Nope -> 50%
I don’t understand the question -> 20%
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#5: Does your
applications to talk
to each other?
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Chatty apps
Yes using REST -> 40%
Yes using GRPC -> 40%
Other -> 30%
No / I don’t understand the question -> 30%
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Facts / Results
App A App B App C
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No content
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INFRASTRUCTURE
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DATA
Spring Boot Data
JPA
Redis
MongoDB
Oracle
PostgreSQL
MySQL
MongoDB Client
Redis Client
Drivers / CIients
JOOQ
JBDC
Abstractions
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MESSAGING
Spring Boot Integration
JMS
RabbitMQ
Kafka Client
RabbitMQ Client
CIients
AMQP
Kafka
Rsocket
Pulsar Pulsar Client
AMQP Clients
Abstractions/Protocols
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12-factor /
Cloud-Native
Envrionment Variables
Development Testing Staging Production
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Upgrading
App A 1.5.0
V3.4.X
V1.2.X
Redis Client V3.4.3
Kafka Client V1.2.3
App B 3.4.0
Redis Client V3.5.1
Kafka Client V2.2.3
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[Apps + Deps ]
<==>
Infra
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[Apps + Framework + Deps]
<==>
Infra
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Polyglot?
App A 1.5.0 (Java)
V3.4.X
V1.2.X
Redis Client V3.4.3
Kafka Client V1.2.3
App B 3.4.0 (Go)
Redis Client V3.4.3
Kafka Client V1.2.3
Abstractions / Frameworks Abstractions / Frameworks
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KUBERNETES
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DEPLOY AND RUN
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WHY?
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YAML
{
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Demo #1
Let’s do it!
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YAML
{
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We will need
some tools! 🛠🪓
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🤯
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THE PLATFORM
ENGINEERING BUZZ
🤔
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👷🔧
🪓👷
Devs
Infra SREs
Data
Scientists
{
}
THE PLATFORM TEAM
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My
Platform
Platform
APIs
Self Service
Golden
Paths
THE PLATFORM
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CNCF TAG APP DELIVERY
https://tag-app-delivery.cncf.io/whitepapers/platforms/
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Apps APIs
Exchanging
Messages/
Events
Storing and
Reading Data
Observability
Resiliency
Dynamic
Scaling
Release
Strategies
Feature Flags
Work
f
lows Traf
f
ic
Management
PLATFORM CAPABILITIES
Tools
Capabilities
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https://www.aviransplace.com/post/platform-as-a-runtime-paar-beyond-platform-engineering
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No content
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DISCLAIMER
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No content
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->
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App A 1.5.0 (Java) App B 3.4.0 (Go)
Abstractions / Frameworks Abstractions / Frameworks
Dapr Sidecar Dapr Sidecar
Local HTTP/GRPC Local HTTP/GRPC
Dapr StateStore Component
Dapr PubSub Component Dapr Resiliency Policies
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Read App
Write App Subscribe App
Frontend App
Dapr StateStore Component
Dapr PubSub Component Dapr Resiliency Policies
Dapr Service Discovery
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Demo #2
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Read App
Write App
Subscribe App
Frontend App
Dapr StateStore Component
Dapr PubSub Component
Dapr Resiliency Policies
Dapr Service Discovery
Do Some SQL
5%
95%
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No content
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💻🤔
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❤
❤
❤
❤
❤❤
❤
❤
❤
❤
🥳
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Read App
Write App Subscribe App
Dapr StateStore
Dapr PubSub
Dapr Resiliency Policies
Dapr Service Discovery
Dapr PubSub
Dapr Resiliency Policies
Dapr StateStore
🪄
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Demo #3
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Takeaways
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Use the right abstractions
to enable teams to go faster
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Break dependencies
from infra
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For language-agnostic
application level APIs
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Wire cloud native apps
locally
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Thanks
@Salaboy
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PLATFORMS ON K8S
40% DISCOUNT: SALATINO40