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本文小編為大家詳細(xì)介紹“springboot之怎么同時(shí)連接多個(gè)redis”，內(nèi)容詳細(xì)，步驟清晰，細(xì)節(jié)處理妥當(dāng)，希望這篇“springboot之怎么同時(shí)連接多個(gè)redis”文章能幫助大家解決疑惑，下面跟著小編的思路慢慢深入，一起來(lái)學(xué)習(xí)新知識(shí)吧。
Jedis：是Redis的Java實(shí)現(xiàn)客戶端，提供了比較全面的Redis命令的支持，復(fù)雜的redis操作需要使用它；springboot1.x 默認(rèn)集成；據(jù)說(shuō)在高并發(fā)下有并發(fā)性問(wèn)題出現(xiàn)；
Lettuce：高級(jí)Redis客戶端，用于線程安全同步，異步和響應(yīng)使用，支持集群，Sentinel，管道和編碼器，springboot 2.x 默認(rèn)集成
Redission：Redisson是一個(gè)在Redis的基礎(chǔ)上實(shí)現(xiàn)的Java駐內(nèi)存數(shù)據(jù)網(wǎng)格（In-Memory Data Grid）。它不僅提供了一系列的分布式的Java常用對(duì)象，還提供了許多分布式服務(wù)。其中包括(BitSet, Set, Multimap, SortedSet, Map, List, Queue, BlockingQueue, Deque, BlockingDeque, Semaphore, Lock, AtomicLong, CountDownLatch, Publish / Subscribe, Bloom filter, Remote service, Spring cache, Executor service, Live Object service, Scheduler service) Redisson提供了使用Redis的最簡(jiǎn)單和最便捷的方法。Redisson的宗旨是促進(jìn)使用者對(duì)Redis的關(guān)注分離（Separation of Concern），從而讓使用者能夠?qū)⒕Ω械胤旁谔幚順I(yè)務(wù)邏輯上。暫時(shí)企業(yè)級(jí)開(kāi)發(fā)感覺(jué)只是使用了分布式鎖；
結(jié)論：
單個(gè)redis隨便使用哪個(gè)客戶端都可以，也可以使用 Jedis + Redission 或者 Lettuce + Redission；
由于Jedis使用和研究比較多，此處使用Jedis拋磚引玉，實(shí)現(xiàn)三組redis + 分布式鎖；Lettuce版本也可以根據(jù)此思路編寫(xiě)；
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> <exclusions> <!-- 不依賴Redis的異步客戶端lettuce --> <exclusion> <groupId>io.lettuce</groupId> <artifactId>lettuce-core</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> </dependency>
spring: redis: r1: host: 192.168.1.210 port: 6379 password: #cluster: #nodes: 192.168.1.101:6379,192.168.1.102:6379,192.168.1.103:6379 r2: host: 192.168.1.211 port: 6379 password: #cluster: #nodes: 192.168.1.104:6379,192.168.1.105:6379,192.168.1.106:6379 r3: host: 192.168.1.212 port: 6379 password: #cluster: #nodes: 192.168.1.107:6379,192.168.1.108:6379,192.168.1.109:6379
import java.util.HashSet;
import java.util.Set;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.RedisPassword;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import cn.hutool.core.util.StrUtil;
import lombok.extern.slf4j.Slf4j;
import redis.clients.jedis.JedisPoolConfig;
/**
* redis配置 三個(gè)redis同時(shí)存在
* @author douzi
* @date 2021-12-2 09:00:00
*/
@Slf4j
@Configuration
public class RedisJedisConfig2 {
// r1 redis 配置信息
@Value("${spring.redis.r1.host:}")
private String r1Host;
@Value("${spring.redis.r1.port:}")
private Integer r1Port;
@Value("${spring.redis.r1.password:}")
private String r1Password;
@Value("${spring.redis.r1.cluster.nodes:}")
private String r1Nodes;
//r2 redis 配置信息
@Value("${spring.redis.r2.host:}")
private String r2Host;
@Value("${spring.redis.r2.port:}")
private Integer r2Port;
@Value("${spring.redis.r2.password:}")
private String r2Password;
@Value("${spring.redis.r2.cluster.nodes:}")
private String r2Nodes;
//r3 redis 配置信息
@Value("${spring.redis.r3.host:}")
private String r3Host;
@Value("${spring.redis.r3.port:}")
private Integer r3Port;
@Value("${spring.redis.r3.password:}")
private String r3Password;
@Value("${spring.redis.r3.cluster.nodes:}")
private String r3Nodes;
/**
* connectionFactory 配置工廠
*/
public RedisConnectionFactory connectionFactory(
RedisStandaloneConfiguration redisStandaloneConfiguration,
RedisClusterConfiguration redisClusterConfiguration,
JedisPoolConfig jedisPoolConfig) {
if (redisStandaloneConfiguration == null && redisClusterConfiguration == null) {
log.error("==============請(qǐng)?zhí)砑觬edis配置================");
return null;
}
JedisConnectionFactory jedisConnectionFactory = null;
if (redisStandaloneConfiguration != null) {
jedisConnectionFactory = new JedisConnectionFactory(redisStandaloneConfiguration);
} else {
jedisConnectionFactory = new JedisConnectionFactory(redisClusterConfiguration, jedisPoolConfig);
}
jedisConnectionFactory.afterPropertiesSet();
// 檢查是否可用
RedisConnection connection = null;
try {
connection = jedisConnectionFactory.getConnection();
log.info("reids是否可用:" + !connection.isClosed());
} catch(Exception e) {
log.error("reids不可用，請(qǐng)檢查組件是否啟動(dòng):",e);
} finally {
connection.close();
}
return jedisConnectionFactory;
}
/**
* poolConfig連接池配置 只有集群時(shí)使用 直接寫(xiě)死，不讓外部配置了
* @return
*/
public JedisPoolConfig poolConfig() {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(200);
config.setMaxIdle(50);
config.setMinIdle(8);
config.setMaxWaitMillis(10000); // 獲取連接時(shí)的最大等待毫秒數(shù)(如果設(shè)置為阻塞時(shí)BlockWhenExhausted),如果超時(shí)就拋異常, 小于零:阻塞不確定的時(shí)間, 默認(rèn)-1
config.setTestOnBorrow(true); // 在獲取連接的時(shí)候檢查有效性, 默認(rèn)false
config.setTestOnReturn(false); // 調(diào)用returnObject方法時(shí)，是否進(jìn)行有效檢查
config.setTestWhileIdle(true); // Idle時(shí)進(jìn)行連接掃描
config.setTimeBetweenEvictionRunsMillis(30000); // 表示idle object evitor兩次掃描之間要sleep的毫秒數(shù)
config.setNumTestsPerEvictionRun(10); // 表示idle object evitor每次掃描的最多的對(duì)象數(shù)
config.setMinEvictableIdleTimeMillis(60000); // 表示一個(gè)對(duì)象至少停留在idle狀態(tài)的最短時(shí)間，然后才能被idle object evitor掃描并驅(qū)逐；這一項(xiàng)只有在timeBetweenEvictionRunsMillis大于0時(shí)才有意義
return config;
}
/**
* redisStandaloneConfiguration 單機(jī)版配置
* @param host
* @param port
* @param password
* @param index
* @return
*/
public RedisStandaloneConfiguration redisStandaloneConfiguration(String host, int port, String password, int index) {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(host, port);
if (StrUtil.isNotBlank(password)) {
redisStandaloneConfiguration.setPassword(password);
}
if (index != 0) {
redisStandaloneConfiguration.setDatabase(index);
}
return redisStandaloneConfiguration;
}
/**
* redisClusterConfiguration 集群配置
* @param clusterNodes
* @param password
* @return
*/
public RedisClusterConfiguration redisClusterConfiguration(String clusterNodes, String password) {
RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
// Set<RedisNode> clusterNodes
String[] serverArray = clusterNodes.split(",");
Set<RedisNode> nodes = new HashSet<RedisNode>();
for (String ipPort : serverArray) {
String[] ipAndPort = ipPort.split(":");
nodes.add(new RedisNode(ipAndPort[0].trim(), Integer.valueOf(ipAndPort[1])));
}
redisClusterConfiguration.setClusterNodes(nodes);
redisClusterConfiguration.setMaxRedirects(6);
if (StrUtil.isNotBlank(password)) {
redisClusterConfiguration.setPassword(RedisPassword.of(password));
}
return redisClusterConfiguration;
}
@Bean(name = "redisR1Template")
public RedisTemplate<String, Object> redisR1Template() {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisStandaloneConfiguration redisStandaloneConfiguration = null;
RedisClusterConfiguration redisClusterConfiguration = null;
if (StrUtil.isNotBlank(r1Host) && StrUtil.isBlank(r1Nodes)) {
redisStandaloneConfiguration = redisStandaloneConfiguration(r1Host, r1Port, r1Password, 0);
} else if (StrUtil.isNotBlank(r1Nodes)) {
redisClusterConfiguration = redisClusterConfiguration(r1Nodes, r1Password);
}
log.info("=========================R1 redis信息 開(kāi)始===============================");
template.setConnectionFactory(connectionFactory(redisStandaloneConfiguration, redisClusterConfiguration, poolConfig()));
log.info("=========================R1 redis信息 結(jié)束===============================");
return template;
}
@Bean(name = "redisR2Template")
public RedisTemplate<String, Object> redisR2Template() {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisStandaloneConfiguration redisStandaloneConfiguration = null;
RedisClusterConfiguration redisClusterConfiguration = null;
if (StrUtil.isNotBlank(r2Host) && StrUtil.isBlank(r2Nodes)) {
redisStandaloneConfiguration = redisStandaloneConfiguration(r2Host, r2Port, r2Password, 0);
} else if (StrUtil.isNotBlank(r2Nodes)) {
redisClusterConfiguration = redisClusterConfiguration(r2Nodes, r2Password);
}
log.info("=========================R2 redis信息 開(kāi)始===============================");
template.setConnectionFactory(connectionFactory(redisStandaloneConfiguration, redisClusterConfiguration, poolConfig()));
log.info("=========================R2 redis信息 結(jié)束===============================");
return template;
}
@Bean(name = "redisR3Template")
public RedisTemplate<String, Object> redisR3Template() {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisStandaloneConfiguration redisStandaloneConfiguration = null;
RedisClusterConfiguration redisClusterConfiguration = null;
if (StrUtil.isNotBlank(r3Host) && StrUtil.isBlank(r3Nodes)) {
redisStandaloneConfiguration = redisStandaloneConfiguration(r3Host, r3Port, r3Password, 0);
} else if (StrUtil.isNotBlank(r3Nodes)) {
redisClusterConfiguration = redisClusterConfiguration(r3Nodes, r3Password);
}
log.info("=========================R3 redis信息 開(kāi)始===============================");
template.setConnectionFactory(connectionFactory(redisStandaloneConfiguration, redisClusterConfiguration, poolConfig()));
log.info("=========================R3 redis信息 結(jié)束===============================");
return template;
}
}其中在connectionFactory方法中，添加了，自動(dòng)檢查redis是否連接成功的代碼，在啟動(dòng)項(xiàng)目時(shí)即可判斷是否連接成功。
@RestController
@RequestMapping("/redis")
public class TestRedisController {
@Autowired
RedisTemplate<String, Object> redisR1Template;
@Autowired
RedisTemplate<String, Object> redisR2Template;
@Autowired
RedisTemplate<String, Object> redisR3Template;
@GetMapping("/cs")
public String test() {
redisR1Template.opsForValue().get("1");
redisR2Template.opsForValue().get("1");
redisR3Template.opsForValue().get("1");
return "1";
}
}讀到這里，這篇“springboot之怎么同時(shí)連接多個(gè)redis”文章已經(jīng)介紹完畢，想要掌握這篇文章的知識(shí)點(diǎn)還需要大家自己動(dòng)手實(shí)踐使用過(guò)才能領(lǐng)會(huì)，如果想了解更多相關(guān)內(nèi)容的文章，歡迎關(guān)注億速云行業(yè)資訊頻道。
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