# Specify the DNS URI of your Redis cache.
spring.redis.host=redis20201230.redis.cache.windows.net

# Specify the port for your Redis cache.
spring.redis.port=6379
spring.redis.ssl=true

# Specify the access key for your Redis cache.
spring.redis.password=4pgNlZPhbsla7tgi1s2qONb9YgxttV1zlecnkBJ4uxg=

package com.example.redisdemo;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

@RestController
public class HelloController {

   @Autowired
   private StringRedisTemplate template;

   @RequestMapping("/")
   // Define the Hello World controller.
   public String hello() {

      ValueOperations<String, String> ops = this.template.opsForValue();

      // Add a Hello World string to your cache.
      String key = "greeting";
      if (!this.template.hasKey(key)) {
          ops.set(key, "Hello World!");
      }

      // Return the string from your cache.
      return ops.get(key);
   }
}

C:\workspace\redisdemo>mvnw clean package
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< com.example:redisdemo >------------------------
[INFO] Building redisdemo 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
~~~~~~~~~~~~~~~~ 중략 ~~~~~~~~~~~~~~~~~
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  21.121 s
[INFO] Finished at: 2020-12-30T22:08:19+09:00
[INFO] ------------------------------------------------------------------------

C:\workspace\redisdemo>mvnw spring-boot:run
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< com.example:redisdemo >------------------------
[INFO] Building redisdemo 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
~~~~~~~~~~~~~~~~ 중략 ~~~~~~~~~~~~~~~~~~~
2020-12-30 22:10:54.930  INFO 7284 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-12-30 22:10:54.941  INFO 7284 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-12-30 22:10:54.942  INFO 7284 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.41]
2020-12-30 22:10:55.045  INFO 7284 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-12-30 22:10:55.046  INFO 7284 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1340 ms
2020-12-30 22:10:55.526  INFO 7284 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-12-30 22:10:55.807  INFO 7284 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-12-30 22:10:55.820  INFO 7284 --- [           main] c.e.redisdemo.RedisdemoApplication       : Started RedisdemoApplication in 2.782 seconds (JVM running for 3.
388)


C:\workspace\redisdemo>curl localhost:8080
Hello World!
C:\workspace\redisdemo>