redis整合springboot

redis参照processon图,包含redis知识库。
https://www.processon.com/mindmap/5fab94d77d9c0865e9bc7838

redis面试题，使用场景等
https://mp.weixin.qq.com/s?__biz=MzIwODI1OTk1Nw==&mid=2650321227&idx=1&sn=d60883728b0c7479e1e55381e7559ad8&scene=19#wechat_redirect

依赖中配置

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>


public String getDBStr(int db, String key) {
    RedisConnectionFactory connectionFactory = redisTemplate.getConnectionFactory();
    RedisConnection redisConnection = RedisConnectionUtils.bindConnection(connectionFactory);
    DefaultStringRedisConnection stringRedisConnection = new DefaultStringRedisConnection(redisConnection);
    stringRedisConnection.select(db);
    return stringRedisConnection.get(key);
}

public void setDBStr(int db, String key, String value) {
    RedisConnectionFactory connectionFactory = redisTemplate.getConnectionFactory();
    RedisConnection redisConnection = RedisConnectionUtils.bindConnection(connectionFactory);
    DefaultStringRedisConnection stringRedisConnection = new DefaultStringRedisConnection(redisConnection);
    stringRedisConnection.select(db);
    stringRedisConnection.set(key, value);
}