https://github.com/ssherwood/spring-boot-gemfire-old

Demo Spring Boot application using Gemfire (POC)
https://github.com/ssherwood/spring-boot-gemfire-old

gemfire spring spring-cache springboot

Last synced: 11 months ago
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Demo Spring Boot application using Gemfire (POC)

• Host: GitHub
• URL: https://github.com/ssherwood/spring-boot-gemfire-old
• Owner: ssherwood
• Created: 2018-10-19T16:01:10.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-10-19T16:01:42.000Z (over 7 years ago)
• Last Synced: 2025-02-05T12:12:59.394Z (about 1 year ago)
• Topics: gemfire, spring, spring-cache, springboot
• Language: Java
• Size: 49.8 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Steps:

# 1 - Spring Initializr

- Go to https://start.spring.io/

- Change the Artifact to "item-catalog"

- Select: web, acutator, devtools, jpa, h2, cache, lombok

- Click Generate

- Find the download, unzip and move to your workspace/repo folder

# 2 - Import into IntelliJ

- Select the maven pom.xml and import

- Wait...

- Update the application.properties

  - management.endpoints.web.exposure.include=*

  - management.endpoint.health.show-details=always

  - spring.datasource.platform=h2

  - spring.jpa.show-sql=true

- Select "run" to verify the app is running

- Hit the actuator

  - http :8080/actuator/health

# 3 - Create a traditional JPA Entity + Repository + Controller

- Create a package "items"

- Create a class Item

  - Add fields id, upc, name, size, lastModified

  - Add Lombok - @Data, @NoArgs, @Entity and @Id (plus strategy Identity)

- Create a class ItemRepository

  - extends JpaRepository

  - add method Optional getByUpc

- Create a class ItemController

  - add @RestController

  - add @GetRequest accepting UPC (not id)

    - throw custom exception

    - @ResponseStatus(code = HttpStatus.NOT_FOUND, reason = "The resource requested does not exist")

- Add data.sql

- Restart the application

- Test the endpoint

  - http :8080/items/013764027053

# 4 - Introduce Spring @Cacheable

- Add the @Cacheable annotation to the get method

- Add a println to demonstrate the cache miss

- Restart and test the endpoint

  - Perform a get to show the cash miss

  - Use gfsh to demonstrated that the value is in the region

  - Perform a second get to now show its getting the value from cache