Download stable version .tar/zip from here :https://redis.io/download
Follow this link for setup/testing : https://redis.io/topics/quickstart
Some commands to setup:
cd redis-stable
make
sudo make install
cd src
redis-server
Test it:
$ redis-cli ping
PONG ==> response
$ redis-cli
redis 127.0.0.1:6379> ping
PONG
redis 127.0.0.1:6379> set mykey somevalue
OK
redis 127.0.0.1:6379> get mykey
"somevalue"
pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>redis</groupId> <artifactId>redis</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <!-- https://mvnrepository.com/artifact/redis.clients/jedis --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.5</version> </dependency> </dependencies> </project>
Java for Testing:
import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Set; public class Redisclient { public static void main(String[] args) { //Connecting to Redis server on localhost Jedis jedis = new Jedis("localhost"); //Can read jedis objects from Pool. /*JedisPoolConfig jedisPoolConfig = new JedisPoolConfig(); JedisPool pool = new JedisPool(jedisPoolConfig, Constants.REDIS_IP_EUROPE, Constants.REDIS_PORT,Constants.REDIS_TIMEOUT); Jedis jedis = pool.getResource(); jedis.auth(Constants.REDIS_PWD);*/ //Get all Student details from DB. Here we can use Tax calculation values. List<Student> list = getAllStudentsFromDB(); ObjectMapper mapper = new ObjectMapper(); String studentJSON = ""; try { studentJSON = mapper.writeValueAsString(list); } catch (JsonProcessingException e) { e.printStackTrace(); } System.out.println("JSON : "+studentJSON); //writing value to redis jedis.set("allstudents", studentJSON); //reading from redis String allstudents = jedis.get("allstudents"); try { List<Student> studentList = mapper.readValue(allstudents,new TypeReference<List<Student>>(){}); studentList.forEach(System.out::println); } catch (IOException e) { e.printStackTrace(); } } public static List<Student> getAllStudentsFromDB() { Student st = new Student(); st.setAge(10); st.setId(1); st.setName("kumar"); List<String> subjects = new ArrayList<String>(); subjects.add("maths"); subjects.add("social"); subjects.add("science"); st.setSubjects(subjects); Student st1 = new Student(); st1.setAge(110); st1.setId(11); st1.setName("kumar1"); List<String> subjects1 = new ArrayList<String>(); subjects1.add("maths1"); subjects1.add("social1"); subjects1.add("science1"); st1.setSubjects(subjects1); List<Student> list = new ArrayList<Student>(); list.add(st); list.add(st1); return list; } }
