redisson springboot配置

pom

xml 复制代码

        <!--redisson-->
        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.20.1</version>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-extra</artifactId>
            <version>5.8.18</version>
        </dependency>

YML

yml 复制代码

---
spring:
  redis:
    # 地址
    host: 192.168.1.243
    # 端口，默认为6379
    port: 6379
    # 数据库索引
    database: 6
    # 密码(如没有密码请注释掉)
    # password:
    # 连接超时时间
    timeout: 10s
    # 是否开启ssl
    ssl: false

配置类

java 复制代码

import cn.hutool.core.util.StrUtil;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.micrometer.core.instrument.util.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.NameMapper;
import org.redisson.codec.JsonJacksonCodec;
import org.redisson.spring.starter.RedissonAutoConfigurationCustomizer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;


@Slf4j
@Configuration
public class RedisConfig {


    @Autowired
    private ObjectMapper objectMapper;

    @Bean
    public RedissonAutoConfigurationCustomizer redissonCustomizer() {
        return config -> {
            config.setThreads(4) //线程池数量
                .setNettyThreads(8) //Netty线程池数量
                .setCodec(new JsonJacksonCodec(objectMapper));
            // 使用单机模式
            config.useSingleServer()
                    //设置redis key前缀
                    .setNameMapper(new KeyPrefixHandler("test"))
                    .setTimeout(10000)
                    .setClientName("redis-test")
//            连接空闲超时，单位：毫秒
                    .setIdleConnectionTimeout(10000)
//            发布和订阅连接池大小
                    .setSubscriptionConnectionPoolSize(50)
//            最小空闲连接数
                    .setConnectionMinimumIdleSize(8)
//                    连接池大小
                    .setConnectionPoolSize(32);

            log.info("初始化 redis 配置");
        };
    }

     class KeyPrefixHandler implements NameMapper {

        private final String keyPrefix;

        public KeyPrefixHandler(String keyPrefix) {
            //前缀为空 则返回空前缀
            this.keyPrefix = StrUtil.isBlank(keyPrefix) ? "" : keyPrefix + ":";
        }

        /**
         * 增加前缀
         */
        @Override
        public String map(String name) {
            if (StringUtils.isBlank(name)) {
                return null;
            }
            if (StringUtils.isNotBlank(keyPrefix) && !name.startsWith(keyPrefix)) {
                return keyPrefix + name;
            }
            return name;
        }

        /**
         * 去除前缀
         */
        @Override
        public String unmap(String name) {
            if (StringUtils.isBlank(name)) {
                return null;
            }
            if (StringUtils.isNotBlank(keyPrefix) && name.startsWith(keyPrefix)) {
                return name.substring(keyPrefix.length());
            }
            return name;
        }

    }
}

调用工具类

java 复制代码

package com.demo.config.redis;

import cn.hutool.extra.spring.SpringUtil;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.redisson.api.*;

import java.time.Duration;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Consumer;
import java.util.stream.Collectors;
import java.util.stream.Stream;


@NoArgsConstructor(access = AccessLevel.PRIVATE)
@SuppressWarnings(value = {"unchecked", "rawtypes"})
public class RedisUtils {

    private static final RedissonClient CLIENT = SpringUtil.getBean(RedissonClient.class);

    /**
     * 限流
     *
     * @param key          限流key
     * @param rateType     限流类型
     * @param rate         速率
     * @param rateInterval 速率间隔
     * @return -1 表示失败
     */
    public static long rateLimiter(String key, RateType rateType, int rate, int rateInterval) {
        RRateLimiter rateLimiter = CLIENT.getRateLimiter(key);
        rateLimiter.trySetRate(rateType, rate, rateInterval, RateIntervalUnit.SECONDS);
        if (rateLimiter.tryAcquire()) {
            return rateLimiter.availablePermits();
        } else {
            return -1L;
        }
    }

    /**
     * 获取客户端实例
     */
    public static RedissonClient getClient() {
        return CLIENT;
    }

    /**
     * 发布通道消息
     *
     * @param channelKey 通道key
     * @param msg        发送数据
     * @param consumer   自定义处理
     */
    public static <T> void publish(String channelKey, T msg, Consumer<T> consumer) {
        RTopic topic = CLIENT.getTopic(channelKey);
        topic.publish(msg);
        consumer.accept(msg);
    }

    public static <T> void publish(String channelKey, T msg) {
        RTopic topic = CLIENT.getTopic(channelKey);
        topic.publish(msg);
    }

    /**
     * 订阅通道接收消息
     *
     * @param channelKey 通道key
     * @param clazz      消息类型
     * @param consumer   自定义处理
     */
    public static <T> Integer subscribe(String channelKey, Class<T> clazz, Consumer<T> consumer) {
        RTopic topic = CLIENT.getTopic(channelKey);
        int i = topic.addListener(clazz, (channel, msg) -> consumer.accept(msg));
        return i;
    }

    /**
     * 无法取消订阅(todo: 待排查)
     * @param channelKey
     * @param listenerIds
     * @param <T>
     */
    public static <T> void unSubscribe(String channelKey,Integer... listenerIds) {
        RTopic topic = CLIENT.getTopic(channelKey);
        topic.removeListener(listenerIds);
    }

    /**
     * 无法取消订阅(todo: 待排查)
     * @param channelKey
     */
    public static void unSubscribeAll(String channelKey) {
        RTopic topic = CLIENT.getTopic(channelKey);
        topic.removeAllListeners();
        topic.removeAllListenersAsync();
    }

    /**
     * 缓存基本的对象，Integer、String、实体类等
     *
     * @param key   缓存的键值
     * @param value 缓存的值
     */
    public static <T> void setCacheObject(final String key, final T value) {
        setCacheObject(key, value, false);
    }

    /**
     * 缓存基本的对象，保留当前对象 TTL 有效期
     *
     * @param key       缓存的键值
     * @param value     缓存的值
     * @param isSaveTtl 是否保留TTL有效期(例如: set之前ttl剩余90 set之后还是为90)
     * @since Redis 6.X 以上使用 setAndKeepTTL 兼容 5.X 方案
     */
    public static <T> void setCacheObject(final String key, final T value, final boolean isSaveTtl) {
        RBucket<T> bucket = CLIENT.getBucket(key);
        if (isSaveTtl) {
            try {
                bucket.setAndKeepTTL(value);
            } catch (Exception e) {
                long timeToLive = bucket.remainTimeToLive();
                setCacheObject(key, value, Duration.ofMillis(timeToLive));
            }
        } else {
            bucket.set(value);
        }
    }

    /**
     * 缓存基本的对象，Integer、String、实体类等
     *
     * @param key      缓存的键值
     * @param value    缓存的值
     * @param duration 时间
     */
    public static <T> void setCacheObject(final String key, final T value, final Duration duration) {
        RBatch batch = CLIENT.createBatch();
        RBucketAsync<T> bucket = batch.getBucket(key);
        bucket.setAsync(value);
        bucket.expireAsync(duration);
        batch.execute();
    }

    /**
     * 如果不存在则设置 并返回 true 如果存在则返回 false
     *
     * @param key   缓存的键值
     * @param value 缓存的值
     * @return set成功或失败
     */
    public static <T> boolean setObjectIfAbsent(final String key, final T value, final Duration duration) {
        RBucket<T> bucket = CLIENT.getBucket(key);
        return bucket.setIfAbsent(value, duration);
    }

    /**
     * 注册对象监听器
     * <p>
     * key 监听器需开启 `notify-keyspace-events` 等 redis 相关配置
     *
     * @param key      缓存的键值
     * @param listener 监听器配置
     */
    public static <T> void addObjectListener(final String key, final ObjectListener listener) {
        RBucket<T> result = CLIENT.getBucket(key);
        result.addListener(listener);
    }

    /**
     * 设置有效时间
     *
     * @param key     Redis键
     * @param timeout 超时时间
     * @return true=设置成功；false=设置失败
     */
    public static boolean expire(final String key, final long timeout) {
        return expire(key, Duration.ofSeconds(timeout));
    }

    /**
     * 设置有效时间
     *
     * @param key      Redis键
     * @param duration 超时时间
     * @return true=设置成功；false=设置失败
     */
    public static boolean expire(final String key, final Duration duration) {
        RBucket rBucket = CLIENT.getBucket(key);
        return rBucket.expire(duration);
    }

    /**
     * 获得缓存的基本对象。
     *
     * @param key 缓存键值
     * @return 缓存键值对应的数据
     */
    public static <T> T getCacheObject(final String key) {
        RBucket<T> rBucket = CLIENT.getBucket(key);
        return rBucket.get();
    }

    /**
     * 获得key剩余存活时间
     *
     * @param key 缓存键值
     * @return 剩余存活时间
     */
    public static <T> long getTimeToLive(final String key) {
        RBucket<T> rBucket = CLIENT.getBucket(key);
        return rBucket.remainTimeToLive();
    }

    /**
     * 删除单个对象
     *
     * @param key 缓存的键值
     */
    public static boolean deleteObject(final String key) {
        return CLIENT.getBucket(key).delete();
    }

    /**
     * 删除集合对象
     *
     * @param collection 多个对象
     */
    public static void deleteObject(final Collection collection) {
        RBatch batch = CLIENT.createBatch();
        collection.forEach(t -> {
            batch.getBucket(t.toString()).deleteAsync();
        });
        batch.execute();
    }

    /**
     * 检查缓存对象是否存在
     *
     * @param key 缓存的键值
     */
    public static boolean isExistsObject(final String key) {
        return CLIENT.getBucket(key).isExists();
    }

    /**
     * 缓存List数据
     *
     * @param key      缓存的键值
     * @param dataList 待缓存的List数据
     * @return 缓存的对象
     */
    public static <T> boolean setCacheList(final String key, final List<T> dataList) {
        RList<T> rList = CLIENT.getList(key);
        return rList.addAll(dataList);
    }

    /**
     * 注册List监听器
     * <p>
     * key 监听器需开启 `notify-keyspace-events` 等 redis 相关配置
     *
     * @param key      缓存的键值
     * @param listener 监听器配置
     */
    public static <T> void addListListener(final String key, final ObjectListener listener) {
        RList<T> rList = CLIENT.getList(key);
        rList.addListener(listener);
    }

    /**
     * 获得缓存的list对象
     *
     * @param key 缓存的键值
     * @return 缓存键值对应的数据
     */
    public static <T> List<T> getCacheList(final String key) {
        RList<T> rList = CLIENT.getList(key);
        return rList.readAll();
    }

    /**
     * 缓存Set
     *
     * @param key     缓存键值
     * @param dataSet 缓存的数据
     * @return 缓存数据的对象
     */
    public static <T> boolean setCacheSet(final String key, final Set<T> dataSet) {
        RSet<T> rSet = CLIENT.getSet(key);
        return rSet.addAll(dataSet);
    }

    /**
     * 注册Set监听器
     * <p>
     * key 监听器需开启 `notify-keyspace-events` 等 redis 相关配置
     *
     * @param key      缓存的键值
     * @param listener 监听器配置
     */
    public static <T> void addSetListener(final String key, final ObjectListener listener) {
        RSet<T> rSet = CLIENT.getSet(key);
        rSet.addListener(listener);
    }

    /**
     * 获得缓存的set
     *
     * @param key 缓存的key
     * @return set对象
     */
    public static <T> Set<T> getCacheSet(final String key) {
        RSet<T> rSet = CLIENT.getSet(key);
        return rSet.readAll();
    }

    /**
     * 缓存Map
     *
     * @param key     缓存的键值
     * @param dataMap 缓存的数据
     */
    public static <T> void setCacheMap(final String key, final Map<String, T> dataMap) {
        if (dataMap != null) {
            RMap<String, T> rMap = CLIENT.getMap(key);
            rMap.putAll(dataMap);
        }
    }

    /**
     * 注册Map监听器
     * <p>
     * key 监听器需开启 `notify-keyspace-events` 等 redis 相关配置
     *
     * @param key      缓存的键值
     * @param listener 监听器配置
     */
    public static <T> void addMapListener(final String key, final ObjectListener listener) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        rMap.addListener(listener);
    }

    /**
     * 获得缓存的Map
     *
     * @param key 缓存的键值
     * @return map对象
     */
    public static <T> Map<String, T> getCacheMap(final String key) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        return rMap.getAll(rMap.keySet());
    }

    /**
     * 获得缓存Map的key列表
     *
     * @param key 缓存的键值
     * @return key列表
     */
    public static <T> Set<String> getCacheMapKeySet(final String key) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        return rMap.keySet();
    }

    /**
     * 往Hash中存入数据
     *
     * @param key   Redis键
     * @param hKey  Hash键
     * @param value 值
     */
    public static <T> void setCacheMapValue(final String key, final String hKey, final T value) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        rMap.put(hKey, value);
    }

    /**
     * 获取Hash中的数据
     *
     * @param key  Redis键
     * @param hKey Hash键
     * @return Hash中的对象
     */
    public static <T> T getCacheMapValue(final String key, final String hKey) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        return rMap.get(hKey);
    }

    /**
     * 删除Hash中的数据
     *
     * @param key  Redis键
     * @param hKey Hash键
     * @return Hash中的对象
     */
    public static <T> T delCacheMapValue(final String key, final String hKey) {
        RMap<String, T> rMap = CLIENT.getMap(key);
        return rMap.remove(hKey);
    }

    /**
     * 删除Hash中的数据
     *
     * @param key   Redis键
     * @param hKeys Hash键
     */
    public static <T> void delMultiCacheMapValue(final String key, final Set<String> hKeys) {
        RBatch batch = CLIENT.createBatch();
        RMapAsync<String, T> rMap = batch.getMap(key);
        for (String hKey : hKeys) {
            rMap.removeAsync(hKey);
        }
        batch.execute();
    }

    /**
     * 获取多个Hash中的数据
     *
     * @param key   Redis键
     * @param hKeys Hash键集合
     * @return Hash对象集合
     */
    public static <K, V> Map<K, V> getMultiCacheMapValue(final String key, final Set<K> hKeys) {
        RMap<K, V> rMap = CLIENT.getMap(key);
        return rMap.getAll(hKeys);
    }

    /**
     * 设置原子值
     *
     * @param key   Redis键
     * @param value 值
     */
    public static void setAtomicValue(String key, long value) {
        RAtomicLong atomic = CLIENT.getAtomicLong(key);
        atomic.set(value);
    }

    /**
     * 获取原子值
     *
     * @param key Redis键
     * @return 当前值
     */
    public static long getAtomicValue(String key) {
        RAtomicLong atomic = CLIENT.getAtomicLong(key);
        return atomic.get();
    }

    /**
     * 递增原子值
     *
     * @param key Redis键
     * @return 当前值
     */
    public static long incrAtomicValue(String key) {
        RAtomicLong atomic = CLIENT.getAtomicLong(key);
        return atomic.incrementAndGet();
    }

    /**
     * 递减原子值
     *
     * @param key Redis键
     * @return 当前值
     */
    public static long decrAtomicValue(String key) {
        RAtomicLong atomic = CLIENT.getAtomicLong(key);
        return atomic.decrementAndGet();
    }

    /**
     * 获得缓存的基本对象列表
     *
     * @param pattern 字符串前缀
     * @return 对象列表
     */
    public static Collection<String> keys(final String pattern) {
        Stream<String> stream = CLIENT.getKeys().getKeysStreamByPattern(pattern);
        return stream.collect(Collectors.toList());
    }

    /**
     * 删除缓存的基本对象列表
     *
     * @param pattern 字符串前缀
     */
    public static void deleteKeys(final String pattern) {
        CLIENT.getKeys().deleteByPattern(pattern);
    }

    /**
     * 检查redis中是否存在key
     *
     * @param key 键
     */
    public static Boolean hasKey(String key) {
        RKeys rKeys = CLIENT.getKeys();
        return rKeys.countExists(key) > 0;
    }

}