Introduction to the

The main application scenario of Redis multi-data source is to use multiple Redis servers or use multiple Redis libraries. This article uses the FastDEP dependent integration framework to quickly integrate Redis multi-data source and integrate the Lettuce connection pool. Simply import the dependencies and configure the multi-source connection information in the YAML file.

The source address

We hope you can support star, and we will add easy integration of other dependencies in the future. Github.com/louislivi/f…

Introduction of depend on

• Maven

<dependency>
    <groupId>com.louislivi.fastdep</groupId>
    <artifactId>fastdep-redis</artifactId>
    <version>1.0.1</version>
</dependency>
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• Gradle

compile group: 'com.louislivi.fastdep'.name: 'fastdep-redis'.version: '1.0.1'
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The configuration file

fastdep:
    redis:
      redis1: # connection name
        database: 0
        host: 192.16812.88.
        port: 6379
        lettuce: The following are supplementary Settings for connection pooling
          shutdown-timeout: 100 # turn off the timeout
          pool:
            max-active: 18 # maximum number of connections in the pool (use negative values to indicate no limit)
            max-idle: 8 The maximum number of free connections in the connection pool
            max-wait: 30 Maximum connection pool blocking wait time (negative value indicates no limit)
            min-idle: 0 Minimum free connection in connection pool
      redis2: # connection name
        database: 1
        host: 192.16812.88.
        port: 6379
        lettuce: The following are supplementary Settings for connection pooling
          shutdown-timeout: 100 # turn off the timeout
          pool:
            max-active: 18 # maximum number of connections in the pool (use negative values to indicate no limit)
            max-idle: 8 The maximum number of free connections in the connection pool
            max-wait: 30 Maximum connection pool blocking wait time (negative value indicates no limit)
            min-idle: 0 Minimum free connection in connection pool
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using

@Autowired
private StringRedisTemplate redis1StringRedisTemplate;
StringRedisTemplate is the fixed injected Redis object type.
// Will be automatically matched based on the injected variable name

@Autowired
private StringRedisTemplate redis2StringRedisTemplate;


@GetMapping("redis")
public void redis(a) {
    System.out.println(redis1StringRedisTemplate.opsForValue().get("test"));
    System.out.println(redis2StringRedisTemplate.opsForValue().get("test"));
}
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extension

Sometimes you need to customize the redisTemplate serialization and add some extra configuration. In this case, you can package a Redis utility class to do this

package com.louislivi.fastdep.test.utils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Component;

/**
 * RedisUtil
 * 
 * @author : louislivi
 */
@Component
public class RedisUtil {
    @Autowired
    private StringRedisTemplate redis1StringRedisTemplate;

    @Autowired
    private StringRedisTemplate redis2StringRedisTemplate;

    @Autowired
    private RedisTemplate redis2RedisTemplate;

    @Autowired
    private RedisTemplate redis1RedisTemplate;

    public RedisTemplate redisTemplate(String name) {
        RedisTemplate redisTemplate;
        switch (name) {
            case "redis2":
                redisTemplate = redis2RedisTemplate;
                break;
            default:
                redisTemplate = redis1RedisTemplate;
                break;
        }
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(stringRedisSerializer);
        redisTemplate.setValueSerializer(stringRedisSerializer);
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        redisTemplate.setHashValueSerializer(stringRedisSerializer);
        return redisTemplate;
    }

    public StringRedisTemplate stringRedisTemplate(String name) {
        StringRedisTemplate stringRedisTemplate;
        switch (name) {
            case "redis2":
                stringRedisTemplate = redis2StringRedisTemplate;
                break;
            default:
                stringRedisTemplate = redis1StringRedisTemplate;
                break;
        }
        stringRedisTemplate.setEnableTransactionSupport(true);
        returnstringRedisTemplate; }}Copy the code

@Autowired
private RedisUtil redisUtil;


@GetMapping("redis")
public void redis(a) {
    System.out.println(redisUtil.redisTemplate("redis1").opsForValue().get("test"));
    System.out.println(redisUtil.stringRedisTemplate("redis2").opsForValue().get("test"));
}
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The principle of

Use ImportBeanDefinitionRegistrar BeanDefinitionBuilder. GenericBeanDefinition dynamic injection Bean is very simple interested can look at the source, is dependent on integrated so simple a lot?

Hope everyone can support open source, give a little star, will continue to develop other dependencies integration, even compatible with other frameworks. Fastdep makes Java integration dependencies easier. We also recruit like-minded coders to work together to improve this project.