Spring Cloud GCP

Spring Cloud GCP contains a set of easy to use starters/autoconfigurations that allow you to easily connect and adopt GCP services.
Spring Cloud GCP is part of the Spring Cloud release train.
Even though Spring Cloud GCP is part of the Spring Cloud release train, it doesn't mean that you need to use any Spring Cloud features (Eureka, Config Server, etc.). The release train helps manage dependency versions so that you don't need to specify versions. It avoids having incompatible dependency versions, and eliminates dependency conflicts.
Demo
A short demo video of Spring Cloud GCP
Configure Spring Boot Project
New Spring Boot Project
Create a new Spring Boot project use Spring Initializr, and add the GCP Support dependency.
Add the GCP Support dependency
Or, generate the project using curl:
curl https://start.spring.io/starter.zip \
  -d dependencies=web,cloud-gcp,lombok \
  -d bootVersion=2.3.1.RELEASE \
  -d baseDir=demo
Unpack the downloaded zip file:
unzip demo.zip
The generated project will include Spring Cloud release train BOM. 
Existing Spring Boot Project
If you want to add Spring Cloud GCP to existing project, simply add Spring Cloud release train configuration. Different Spring Boot version is compatible with different Spring Cloud releases.
Spring Boot Version
Spring Cloud Version
2.1
Greenwich
2.2
Hoxton
2.3
Hoxton.SR5
See Spring Cloud documentation for the latest versions.
Add the compatible Spring Cloud BOM version to your project:
Maven
Gradle
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Hoxton.SR5</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
buildscript {
  dependencies {
    classpath "io.spring.gradle:dependency-management-plugin:1.0.2.RELEASE"
  }
}
​
apply plugin: "io.spring.dependency-management"
​
dependencyManagement {
  imports {
    mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Hoxton.RELEASE'
  }
}
A BOM is a Bill of Material, when imported, you can specify dependencies managed by the BOM without explicitly specifying a version for that dependency.  Using the Spring Cloud BOM will allow you to use all Google Cloud Client Libraries and Spring Cloud GCP libraries without explicitly specifying a version.
Services
Spring Cloud GCP supports many GCP services using de-facto Spring abstraction layers.
Concerns
GCP Service
Spring Abstraction
Databases
Cloud SQL
JDBC template
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Spring Data JPA
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Cloud Spanner
Spring Data Spanner
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Spring Data JPA with Hibernate
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Cloud Datastore
Spring Data Datastore
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Cloud Firestore
Spring Reactive Data Firestore
Messaging
Cloud Pub/Sub
Pub/Sub Template
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Spring Integration
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Spring Cloud Stream
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Spring Dataflow
Configuration
Cloud Secret Manager
Spring Cloud Config
Storage
Cloud Storage
Spring Resource
Cache
Cloud Memorystore
Spring Data Redis
Distributed Tracing
Cloud Trace
Spring Cloud Sleuth
​
​
Zipkin / Brave
Centralized Logging
Cloud Logging
SLF4J / Logback
Monitoring Metrics
Cloud Monitoring
Micrometer / Prometheus
Security
Cloud Identity Aware Proxy
Spring Security

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