todos-redis

Todo(s) Redis

Howdy and welcome...you can never have enough quick cache so to speak. Inevitably you'll need to implement Microservices to cache data for many purposes. There's several common cache access patterns such as Cache-Aside, Read-Through, Write-Through and Write-Behind. Another pattern is Caching as a System of Record where Microservices fuse onto a distributed cache (such as a grid like Gemfire or Pivotal Cloud Cache).

Primary dependencies

• Spring Boot Starter Web (Embedded Tomcat)
• Spring Boot Starter Redis
• Spring Boot Actuators (actuator endpoints)
• Spring Data Rest (blanket our Redis model in a REST API)

Build

git clone https://github.com/Pivotal-Field-Engineering/todos-apps.git
cd todos-apps
# to build only the todos-redis module
./mvnw -pl todos-redis clean package

Run on PCF

Configure your manifest.yml to meet your needs, it's simple enough to create a Redis Service Instance and bind to it on push like so...

Create the on-demand Redis Service Instance.

cf create-service p.redis cache-small todos-redis

Configure your manifest.yml, declaring a binding to the Redis Service Instance.

---
applications:
- name: todos-redis
  memory: 1G
  path: target/todos-redis-1.0.0.SNAP.jar
  services:
   - todos-redis

cd todos-apps/todos-redis
cf push -f manifest.yml # aweeee yeah

Verify

http todos-redis.apps.retro.io/
HTTP/1.1 200 OK
Content-Type: application/json;charset=UTF-8
X-Vcap-Request-Id: 732a9cfb-b910-4645-4544-fd6902e1bd71

[]

References

See this issue when deploying to cf spring-guides/gs-messaging-redis#3