The Beginner’s Guide to Spring Cloud
Original by @ryanjbaxter
https://slides.com/spencer/the-beginners-guide-to-spring-cloud/live
Nice To Meet You
Spring Cloud Core Lead
@spencerbgibb
Agenda
- Spring Cloud Background
- Key Projects
- Getting Down and Dirty With Spring Cloud
- Questions
Survey Time
Anyone Know This Guy?
Why Spring Cloud?
- In general, cloud-native apps are a good thing, just not easy
- It was easy for big companies to put forth the resources to succeed with cloud-native, but what about the little guys?
- Why do we have to reinvent the wheel each time someone wants to build a Cloud Native app?
- Follow the Spring Boot model of providing useful defaults for cloud-native apps with the ability to easily configure them
- Cloud agnostic
Spring Cloud Components
Configuration
Service
Discovery
Circuit
Breakers
Routing &
Messaging
API
Gateway
Tracing
CI Pipelines
& Testing
Yes, There Are More
- Spring Cloud Bus
- Spring Cloud Stream
- Spring Cloud Data
- Spring Cloud Task
- Spring Cloud AWS
- ... and more
Configuration
- We want to remove the configuration out of the application to centralized store across all environments
- Spring Cloud Config Server can use Git, SVN, filesystem, Vault or JDBC to store config
- Config clients (microservice apps) retrieve the configuration from the server on startup
- Can be notified of changes and process changes in a refresh event
Service Discovery
- With the dynamic nature of any cloud-native application depending on things like URLs can be problematic
- Service Discovery allows micro-services to easily discover the routes to the services it needs to use
- Netflix Eureka
- Zookeeper
- Consul
Routing and Messaging
- Your cloud native app will be composed of many microservices so communication will be critical
- Spring Cloud supports communication via HTTP requests or via messaging
- Routing and Load Balancing:
- Netflix Ribbon and Feign
- Messaging:
- RabbitMQ or Kafka
API Gateway
- API Gateways allow you to route API requests (internal or external) to the correct service
- Leverages service discovery and load balancer
- Netflix Zuul
- Spring Cloud Gateway
Circuit Breakers
- Failure is inevitable, but your user’s
don’t need to know - Circuit breakers can help an application function in the face of failure
- Netflix Hystrix
Tracing
- A single request to get data from your application may result in an exponentially large number of requests to various microservices
- Tracing these requests through the application is critical when debugging issues
- Spring Cloud
Sleuth and Zipkin
CI Pipelines and Testing
- Building, testing, and deploying the various services is critical to having a successful cloud native application
- Spring Cloud Pipelines is an opinionated pipeline for Jenkins or Concourse that will automatically create pipelines for your apps
-
Spring Cloud Contract allows you to accurately mock dependencies between services using published contracts
Demo
Q & A
Spencer Gibb
@spencerbgibb
http://spencer.gibb.us
https://github.com/spencergibb
Spring Cloud
@springcloud
http://cloud.spring.io
https://github.com/spring-cloud
https://github.com/spring-cloud-samples
Original by: Ryan Baxter
@ryanjbaxter
http://ryanjbaxter.com
https://github.com/ryanjbaxter
The Beginner’s Guide to Spring Cloud
By Spencer Gibb
The Beginner’s Guide to Spring Cloud
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