推荐一个简单的网站制作,天津市工程建设交易网站查汗国,网站开发工程师专业,淮南查查论坛业务需求
业务里面需要文章的定时发布功能#xff0c;因此打算采用mq和redis来实现一下定时发布的功能。mq之前用过了。基于一些私信交换机地信息过期策略实现。所以这次采用redis。并且打算将这个延迟任务的服务集成在一个微服务里面#xff0c;提供对外的feign的远程调用接…业务需求
业务里面需要文章的定时发布功能因此打算采用mq和redis来实现一下定时发布的功能。mq之前用过了。基于一些私信交换机地信息过期策略实现。所以这次采用redis。并且打算将这个延迟任务的服务集成在一个微服务里面提供对外的feign的远程调用接口这样就可以一劳永逸一下。
博客内容
本次redis实现将分为多个文章来详细描述一下。并且介绍一些重要功能的实现思路和重要代码以及redis的一些特性。
基本环境
redis需要在虚拟机或者本地机器上配置并且连接。
redis依赖 !-- redis--dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId/dependency!-- redis依赖commons-pool 这个依赖一定要添加 --dependencygroupIdorg.apache.commons/groupIdartifactIdcommons-pool2/artifactId/dependency/dependencies
可读性cache封装包代码
这里面封装了一些redis常用数据结构的代码封装之后可读性更高自己也可以加以修饰提高代码效率。
后续会对里面的一些重点的代码进行阐述。
将这个交给spring管理到时候哪个服务需要注意一下就可以了。当然不给spring管理也无所谓自己放在一个公有包下面引入当成类对象使用就行。
package com.neu.base.redis;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.*;
import org.springframework.data.redis.core.*;
import org.springframework.data.redis.core.ZSetOperations.TypedTuple;
import org.springframework.data.redis.core.types.Expiration;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;import java.io.IOException;
import java.util.*;
import java.util.concurrent.TimeUnit;Component
public class CacheService extends CachingConfigurerSupport {Autowiredprivate StringRedisTemplate stringRedisTemplate;public StringRedisTemplate getstringRedisTemplate() {return this.stringRedisTemplate;}/** -------------------key相关操作--------------------- *//*** 删除key** param key*/public void delete(String key) {stringRedisTemplate.delete(key);}/*** 批量删除key** param keys*/public void delete(CollectionString keys) {stringRedisTemplate.delete(keys);}/*** 序列化key** param key* return*/public byte[] dump(String key) {return stringRedisTemplate.dump(key);}/*** 是否存在key** param key* return*/public Boolean exists(String key) {return stringRedisTemplate.hasKey(key);}/*** 设置过期时间** param key* param timeout* param unit* return*/public Boolean expire(String key, long timeout, TimeUnit unit) {return stringRedisTemplate.expire(key, timeout, unit);}/*** 设置过期时间** param key* param date* return*/public Boolean expireAt(String key, Date date) {return stringRedisTemplate.expireAt(key, date);}/*** 查找匹配的key** param pattern* return*/public SetString keys(String pattern) {return stringRedisTemplate.keys(pattern);}/*** 将当前数据库的 key 移动到给定的数据库 db 当中** param key* param dbIndex* return*/public Boolean move(String key, int dbIndex) {return stringRedisTemplate.move(key, dbIndex);}/*** 移除 key 的过期时间key 将持久保持** param key* return*/public Boolean persist(String key) {return stringRedisTemplate.persist(key);}/*** 返回 key 的剩余的过期时间** param key* param unit* return*/public Long getExpire(String key, TimeUnit unit) {return stringRedisTemplate.getExpire(key, unit);}/*** 返回 key 的剩余的过期时间** param key* return*/public Long getExpire(String key) {return stringRedisTemplate.getExpire(key);}/*** 从当前数据库中随机返回一个 key** return*/public String randomKey() {return stringRedisTemplate.randomKey();}/*** 修改 key 的名称** param oldKey* param newKey*/public void rename(String oldKey, String newKey) {stringRedisTemplate.rename(oldKey, newKey);}/*** 仅当 newkey 不存在时将 oldKey 改名为 newkey** param oldKey* param newKey* return*/public Boolean renameIfAbsent(String oldKey, String newKey) {return stringRedisTemplate.renameIfAbsent(oldKey, newKey);}/*** 返回 key 所储存的值的类型** param key* return*/public DataType type(String key) {return stringRedisTemplate.type(key);}/** -------------------string相关操作--------------------- *//*** 设置指定 key 的值* param key* param value*/public void set(String key, String value) {stringRedisTemplate.opsForValue().set(key, value);}/*** 获取指定 key 的值* param key* return*/public String get(String key) {return stringRedisTemplate.opsForValue().get(key);}/*** 返回 key 中字符串值的子字符* param key* param start* param end* return*/public String getRange(String key, long start, long end) {return stringRedisTemplate.opsForValue().get(key, start, end);}/*** 将给定 key 的值设为 value 并返回 key 的旧值(old value)** param key* param value* return*/public String getAndSet(String key, String value) {return stringRedisTemplate.opsForValue().getAndSet(key, value);}/*** 对 key 所储存的字符串值获取指定偏移量上的位(bit)** param key* param offset* return*/public Boolean getBit(String key, long offset) {return stringRedisTemplate.opsForValue().getBit(key, offset);}/*** 批量获取** param keys* return*/public ListString multiGet(CollectionString keys) {return stringRedisTemplate.opsForValue().multiGet(keys);}/*** 设置ASCII码, 字符串a的ASCII码是97, 转为二进制是01100001, 此方法是将二进制第offset位值变为value** param key* param* param value* 值,true为1, false为0* return*/public boolean setBit(String key, long offset, boolean value) {return stringRedisTemplate.opsForValue().setBit(key, offset, value);}/*** 将值 value 关联到 key 并将 key 的过期时间设为 timeout** param key* param value* param timeout* 过期时间* param unit* 时间单位, 天:TimeUnit.DAYS 小时:TimeUnit.HOURS 分钟:TimeUnit.MINUTES* 秒:TimeUnit.SECONDS 毫秒:TimeUnit.MILLISECONDS*/public void setEx(String key, String value, long timeout, TimeUnit unit) {stringRedisTemplate.opsForValue().set(key, value, timeout, unit);}/*** 只有在 key 不存在时设置 key 的值** param key* param value* return 之前已经存在返回false,不存在返回true*/public boolean setIfAbsent(String key, String value) {return stringRedisTemplate.opsForValue().setIfAbsent(key, value);}/*** 用 value 参数覆写给定 key 所储存的字符串值从偏移量 offset 开始** param key* param value* param offset* 从指定位置开始覆写*/public void setRange(String key, String value, long offset) {stringRedisTemplate.opsForValue().set(key, value, offset);}/*** 获取字符串的长度** param key* return*/public Long size(String key) {return stringRedisTemplate.opsForValue().size(key);}/*** 批量添加** param maps*/public void multiSet(MapString, String maps) {stringRedisTemplate.opsForValue().multiSet(maps);}/*** 同时设置一个或多个 key-value 对当且仅当所有给定 key 都不存在** param maps* return 之前已经存在返回false,不存在返回true*/public boolean multiSetIfAbsent(MapString, String maps) {return stringRedisTemplate.opsForValue().multiSetIfAbsent(maps);}/*** 增加(自增长), 负数则为自减** param key* param* return*/public Long incrBy(String key, long increment) {return stringRedisTemplate.opsForValue().increment(key, increment);}/**** param key* param* return*/public Double incrByFloat(String key, double increment) {return stringRedisTemplate.opsForValue().increment(key, increment);}/*** 追加到末尾** param key* param value* return*/public Integer append(String key, String value) {return stringRedisTemplate.opsForValue().append(key, value);}/** -------------------hash相关操作------------------------- *//*** 获取存储在哈希表中指定字段的值** param key* param field* return*/public Object hGet(String key, String field) {return stringRedisTemplate.opsForHash().get(key, field);}/*** 获取所有给定字段的值** param key* return*/public MapObject, Object hGetAll(String key) {return stringRedisTemplate.opsForHash().entries(key);}/*** 获取所有给定字段的值** param key* param fields* return*/public ListObject hMultiGet(String key, CollectionObject fields) {return stringRedisTemplate.opsForHash().multiGet(key, fields);}public void hPut(String key, String hashKey, String value) {stringRedisTemplate.opsForHash().put(key, hashKey, value);}public void hPutAll(String key, MapString, String maps) {stringRedisTemplate.opsForHash().putAll(key, maps);}/*** 仅当hashKey不存在时才设置** param key* param hashKey* param value* return*/public Boolean hPutIfAbsent(String key, String hashKey, String value) {return stringRedisTemplate.opsForHash().putIfAbsent(key, hashKey, value);}/*** 删除一个或多个哈希表字段** param key* param fields* return*/public Long hDelete(String key, Object... fields) {return stringRedisTemplate.opsForHash().delete(key, fields);}/*** 查看哈希表 key 中指定的字段是否存在** param key* param field* return*/public boolean hExists(String key, String field) {return stringRedisTemplate.opsForHash().hasKey(key, field);}/*** 为哈希表 key 中的指定字段的整数值加上增量 increment** param key* param field* param increment* return*/public Long hIncrBy(String key, Object field, long increment) {return stringRedisTemplate.opsForHash().increment(key, field, increment);}/*** 为哈希表 key 中的指定字段的整数值加上增量 increment** param key* param field* param delta* return*/public Double hIncrByFloat(String key, Object field, double delta) {return stringRedisTemplate.opsForHash().increment(key, field, delta);}/*** 获取所有哈希表中的字段** param key* return*/public SetObject hKeys(String key) {return stringRedisTemplate.opsForHash().keys(key);}/*** 获取哈希表中字段的数量** param key* return*/public Long hSize(String key) {return stringRedisTemplate.opsForHash().size(key);}/*** 获取哈希表中所有值** param key* return*/public ListObject hValues(String key) {return stringRedisTemplate.opsForHash().values(key);}/*** 迭代哈希表中的键值对** param key* param options* return*/public CursorMap.EntryObject, Object hScan(String key, ScanOptions options) {return stringRedisTemplate.opsForHash().scan(key, options);}/** ------------------------list相关操作---------------------------- *//*** 通过索引获取列表中的元素** param key* param index* return*/public String lIndex(String key, long index) {return stringRedisTemplate.opsForList().index(key, index);}/*** 获取列表指定范围内的元素** param key* param start* 开始位置, 0是开始位置* param end* 结束位置, -1返回所有* return*/public ListString lRange(String key, long start, long end) {return stringRedisTemplate.opsForList().range(key, start, end);}/*** 存储在list头部** param key* param value* return*/public Long lLeftPush(String key, String value) {return stringRedisTemplate.opsForList().leftPush(key, value);}/**** param key* param value* return*/public Long lLeftPushAll(String key, String... value) {return stringRedisTemplate.opsForList().leftPushAll(key, value);}/**** param key* param value* return*/public Long lLeftPushAll(String key, CollectionString value) {return stringRedisTemplate.opsForList().leftPushAll(key, value);}/*** 当list存在的时候才加入** param key* param value* return*/public Long lLeftPushIfPresent(String key, String value) {return stringRedisTemplate.opsForList().leftPushIfPresent(key, value);}/*** 如果pivot存在,再pivot前面添加** param key* param pivot* param value* return*/public Long lLeftPush(String key, String pivot, String value) {return stringRedisTemplate.opsForList().leftPush(key, pivot, value);}/**** param key* param value* return*/public Long lRightPush(String key, String value) {return stringRedisTemplate.opsForList().rightPush(key, value);}/**** param key* param value* return*/public Long lRightPushAll(String key, String... value) {return stringRedisTemplate.opsForList().rightPushAll(key, value);}/**** param key* param value* return*/public Long lRightPushAll(String key, CollectionString value) {return stringRedisTemplate.opsForList().rightPushAll(key, value);}/*** 为已存在的列表添加值** param key* param value* return*/public Long lRightPushIfPresent(String key, String value) {return stringRedisTemplate.opsForList().rightPushIfPresent(key, value);}/*** 在pivot元素的右边添加值** param key* param pivot* param value* return*/public Long lRightPush(String key, String pivot, String value) {return stringRedisTemplate.opsForList().rightPush(key, pivot, value);}/*** 通过索引设置列表元素的值** param key* param index* 位置* param value*/public void lSet(String key, long index, String value) {stringRedisTemplate.opsForList().set(key, index, value);}/*** 移出并获取列表的第一个元素** param key* return 删除的元素*/public String lLeftPop(String key) {return stringRedisTemplate.opsForList().leftPop(key);}/*** 移出并获取列表的第一个元素 如果列表没有元素会阻塞列表直到等待超时或发现可弹出元素为止** param key* param timeout* 等待时间* param unit* 时间单位* return*/public String lBLeftPop(String key, long timeout, TimeUnit unit) {return stringRedisTemplate.opsForList().leftPop(key, timeout, unit);}/*** 移除并获取列表最后一个元素** param key* return 删除的元素*/public String lRightPop(String key) {return stringRedisTemplate.opsForList().rightPop(key);}/*** 移出并获取列表的最后一个元素 如果列表没有元素会阻塞列表直到等待超时或发现可弹出元素为止** param key* param timeout* 等待时间* param unit* 时间单位* return*/public String lBRightPop(String key, long timeout, TimeUnit unit) {return stringRedisTemplate.opsForList().rightPop(key, timeout, unit);}/*** 移除列表的最后一个元素并将该元素添加到另一个列表并返回** param sourceKey* param destinationKey* return*/public String lRightPopAndLeftPush(String sourceKey, String destinationKey) {return stringRedisTemplate.opsForList().rightPopAndLeftPush(sourceKey,destinationKey);}/*** 从列表中弹出一个值将弹出的元素插入到另外一个列表中并返回它 如果列表没有元素会阻塞列表直到等待超时或发现可弹出元素为止** param sourceKey* param destinationKey* param timeout* param unit* return*/public String lBRightPopAndLeftPush(String sourceKey, String destinationKey,long timeout, TimeUnit unit) {return stringRedisTemplate.opsForList().rightPopAndLeftPush(sourceKey,destinationKey, timeout, unit);}/*** 删除集合中值等于value的元素** param key* param index* index0, 删除所有值等于value的元素; index0, 从头部开始删除第一个值等于value的元素;* index0, 从尾部开始删除第一个值等于value的元素;* param value* return*/public Long lRemove(String key, long index, String value) {return stringRedisTemplate.opsForList().remove(key, index, value);}/*** 裁剪list** param key* param start* param end*/public void lTrim(String key, long start, long end) {stringRedisTemplate.opsForList().trim(key, start, end);}/*** 获取列表长度** param key* return*/public Long lLen(String key) {return stringRedisTemplate.opsForList().size(key);}/** --------------------set相关操作-------------------------- *//*** set添加元素** param key* param values* return*/public Long sAdd(String key, String... values) {return stringRedisTemplate.opsForSet().add(key, values);}/*** set移除元素** param key* param values* return*/public Long sRemove(String key, Object... values) {return stringRedisTemplate.opsForSet().remove(key, values);}/*** 移除并返回集合的一个随机元素** param key* return*/public String sPop(String key) {return stringRedisTemplate.opsForSet().pop(key);}/*** 将元素value从一个集合移到另一个集合** param key* param value* param destKey* return*/public Boolean sMove(String key, String value, String destKey) {return stringRedisTemplate.opsForSet().move(key, value, destKey);}/*** 获取集合的大小** param key* return*/public Long sSize(String key) {return stringRedisTemplate.opsForSet().size(key);}/*** 判断集合是否包含value** param key* param value* return*/public Boolean sIsMember(String key, Object value) {return stringRedisTemplate.opsForSet().isMember(key, value);}/*** 获取两个集合的交集** param key* param otherKey* return*/public SetString sIntersect(String key, String otherKey) {return stringRedisTemplate.opsForSet().intersect(key, otherKey);}/*** 获取key集合与多个集合的交集** param key* param otherKeys* return*/public SetString sIntersect(String key, CollectionString otherKeys) {return stringRedisTemplate.opsForSet().intersect(key, otherKeys);}/*** key集合与otherKey集合的交集存储到destKey集合中** param key* param otherKey* param destKey* return*/public Long sIntersectAndStore(String key, String otherKey, String destKey) {return stringRedisTemplate.opsForSet().intersectAndStore(key, otherKey,destKey);}/*** key集合与多个集合的交集存储到destKey集合中** param key* param otherKeys* param destKey* return*/public Long sIntersectAndStore(String key, CollectionString otherKeys,String destKey) {return stringRedisTemplate.opsForSet().intersectAndStore(key, otherKeys,destKey);}/*** 获取两个集合的并集** param key* param otherKeys* return*/public SetString sUnion(String key, String otherKeys) {return stringRedisTemplate.opsForSet().union(key, otherKeys);}/*** 获取key集合与多个集合的并集** param key* param otherKeys* return*/public SetString sUnion(String key, CollectionString otherKeys) {return stringRedisTemplate.opsForSet().union(key, otherKeys);}/*** key集合与otherKey集合的并集存储到destKey中** param key* param otherKey* param destKey* return*/public Long sUnionAndStore(String key, String otherKey, String destKey) {return stringRedisTemplate.opsForSet().unionAndStore(key, otherKey, destKey);}/*** key集合与多个集合的并集存储到destKey中** param key* param otherKeys* param destKey* return*/public Long sUnionAndStore(String key, CollectionString otherKeys,String destKey) {return stringRedisTemplate.opsForSet().unionAndStore(key, otherKeys, destKey);}/*** 获取两个集合的差集** param key* param otherKey* return*/public SetString sDifference(String key, String otherKey) {return stringRedisTemplate.opsForSet().difference(key, otherKey);}/*** 获取key集合与多个集合的差集** param key* param otherKeys* return*/public SetString sDifference(String key, CollectionString otherKeys) {return stringRedisTemplate.opsForSet().difference(key, otherKeys);}/*** key集合与otherKey集合的差集存储到destKey中** param key* param otherKey* param destKey* return*/public Long sDifference(String key, String otherKey, String destKey) {return stringRedisTemplate.opsForSet().differenceAndStore(key, otherKey,destKey);}/*** key集合与多个集合的差集存储到destKey中** param key* param otherKeys* param destKey* return*/public Long sDifference(String key, CollectionString otherKeys,String destKey) {return stringRedisTemplate.opsForSet().differenceAndStore(key, otherKeys,destKey);}/*** 获取集合所有元素** param key* param* param* return*/public SetString setMembers(String key) {return stringRedisTemplate.opsForSet().members(key);}/*** 随机获取集合中的一个元素** param key* return*/public String sRandomMember(String key) {return stringRedisTemplate.opsForSet().randomMember(key);}/*** 随机获取集合中count个元素** param key* param count* return*/public ListString sRandomMembers(String key, long count) {return stringRedisTemplate.opsForSet().randomMembers(key, count);}/*** 随机获取集合中count个元素并且去除重复的** param key* param count* return*/public SetString sDistinctRandomMembers(String key, long count) {return stringRedisTemplate.opsForSet().distinctRandomMembers(key, count);}/**** param key* param options* return*/public CursorString sScan(String key, ScanOptions options) {return stringRedisTemplate.opsForSet().scan(key, options);}/**------------------zSet相关操作--------------------------------*//*** 添加元素,有序集合是按照元素的score值由小到大排列** param key* param value* param score* return*/public Boolean zAdd(String key, String value, double score) {//key可以是重复的但是value不能重复score可以重复return stringRedisTemplate.opsForZSet().add(key, value, score);}/**** param key* param values* return*/public Long zAdd(String key, SetTypedTupleString values) {return stringRedisTemplate.opsForZSet().add(key, values);}/**** param key* param values* return*/public Long zRemove(String key, Object... values) {return stringRedisTemplate.opsForZSet().remove(key, values);}public Long zRemove(String key, CollectionString values) {if(values!null!values.isEmpty()){Object[] objs values.toArray(new Object[values.size()]);return stringRedisTemplate.opsForZSet().remove(key, objs);}return 0L;}/*** 增加元素的score值并返回增加后的值** param key* param value* param delta* return*/public Double zIncrementScore(String key, String value, double delta) {return stringRedisTemplate.opsForZSet().incrementScore(key, value, delta);}/*** 返回元素在集合的排名,有序集合是按照元素的score值由小到大排列** param key* param value* return 0表示第一位*/public Long zRank(String key, Object value) {return stringRedisTemplate.opsForZSet().rank(key, value);}/*** 返回元素在集合的排名,按元素的score值由大到小排列** param key* param value* return*/public Long zReverseRank(String key, Object value) {return stringRedisTemplate.opsForZSet().reverseRank(key, value);}/*** 获取集合的元素, 从小到大排序** param key* param start* 开始位置* param end* 结束位置, -1查询所有* return*/public SetString zRange(String key, long start, long end) {return stringRedisTemplate.opsForZSet().range(key, start, end);}/*** 获取zset集合的所有元素, 从小到大排序**/public SetString zRangeAll(String key) {return zRange(key,0,-1);}/*** 获取集合元素, 并且把score值也获取** param key* param start* param end* return*/public SetTypedTupleString zRangeWithScores(String key, long start,long end) {return stringRedisTemplate.opsForZSet().rangeWithScores(key, start, end);}/*** 根据Score值查询集合元素** param key* param min* 最小值* param max* 最大值* return*/public SetString zRangeByScore(String key, double min, double max) {return stringRedisTemplate.opsForZSet().rangeByScore(key, min, max);}/*** 根据Score值查询集合元素, 从小到大排序** param key* param min* 最小值* param max* 最大值* return*/public SetTypedTupleString zRangeByScoreWithScores(String key,double min, double max) {return stringRedisTemplate.opsForZSet().rangeByScoreWithScores(key, min, max);}/**** param key* param min* param max* param start* param end* return*/public SetTypedTupleString zRangeByScoreWithScores(String key,double min, double max, long start, long end) {return stringRedisTemplate.opsForZSet().rangeByScoreWithScores(key, min, max,start, end);}/*** 获取集合的元素, 从大到小排序** param key* param start* param end* return*/public SetString zReverseRange(String key, long start, long end) {return stringRedisTemplate.opsForZSet().reverseRange(key, start, end);}public SetString zReverseRangeByScore(String key, long min, long max) {return stringRedisTemplate.opsForZSet().reverseRangeByScore(key, min, max);}/*** 获取集合的元素, 从大到小排序, 并返回score值** param key* param start* param end* return*/public SetTypedTupleString zReverseRangeWithScores(String key,long start, long end) {return stringRedisTemplate.opsForZSet().reverseRangeWithScores(key, start,end);}/*** 根据Score值查询集合元素, 从大到小排序** param key* param min* param max* return*/public SetString zReverseRangeByScore(String key, double min,double max) {return stringRedisTemplate.opsForZSet().reverseRangeByScore(key, min, max);}/*** 根据Score值查询集合元素, 从大到小排序** param key* param min* param max* return*/public SetTypedTupleString zReverseRangeByScoreWithScores(String key, double min, double max) {return stringRedisTemplate.opsForZSet().reverseRangeByScoreWithScores(key,min, max);}/**** param key* param min* param max* param start* param end* return*/public SetString zReverseRangeByScore(String key, double min,double max, long start, long end) {return stringRedisTemplate.opsForZSet().reverseRangeByScore(key, min, max,start, end);}/*** 根据score值获取集合元素数量** param key* param min* param max* return*/public Long zCount(String key, double min, double max) {return stringRedisTemplate.opsForZSet().count(key, min, max);}/*** 获取集合大小** param key* return*/public Long zSize(String key) {return stringRedisTemplate.opsForZSet().size(key);}/*** 获取集合大小** param key* return*/public Long zZCard(String key) {return stringRedisTemplate.opsForZSet().zCard(key);}/*** 获取集合中value元素的score值** param key* param value* return*/public Double zScore(String key, Object value) {return stringRedisTemplate.opsForZSet().score(key, value);}/*** 移除指定索引位置的成员** param key* param start* param end* return*/public Long zRemoveRange(String key, long start, long end) {return stringRedisTemplate.opsForZSet().removeRange(key, start, end);}/*** 根据指定的score值的范围来移除成员** param key* param min* param max* return*/public Long zRemoveRangeByScore(String key, double min, double max) {return stringRedisTemplate.opsForZSet().removeRangeByScore(key, min, max);}/*** 获取key和otherKey的并集并存储在destKey中** param key* param otherKey* param destKey* return*/public Long zUnionAndStore(String key, String otherKey, String destKey) {return stringRedisTemplate.opsForZSet().unionAndStore(key, otherKey, destKey);}/**** param key* param otherKeys* param destKey* return*/public Long zUnionAndStore(String key, CollectionString otherKeys,String destKey) {return stringRedisTemplate.opsForZSet().unionAndStore(key, otherKeys, destKey);}/*** 交集** param key* param otherKey* param destKey* return*/public Long zIntersectAndStore(String key, String otherKey,String destKey) {return stringRedisTemplate.opsForZSet().intersectAndStore(key, otherKey,destKey);}/*** 交集** param key* param otherKeys* param destKey* return*/public Long zIntersectAndStore(String key, CollectionString otherKeys,String destKey) {return stringRedisTemplate.opsForZSet().intersectAndStore(key, otherKeys,destKey);}/**** param key* param options* return*/public CursorTypedTupleString zScan(String key, ScanOptions options) {return stringRedisTemplate.opsForZSet().scan(key, options);}/*** 扫描主键建议使用* param patten* return*/public SetString scan(String patten){//Nullable表示可以为空SetString keys stringRedisTemplate.execute((RedisCallbackSetString) connection - {SetString result new HashSet();try (Cursorbyte[] cursor connection.scan(new ScanOptions.ScanOptionsBuilder().match(patten).count(10000).build())) {while (cursor.hasNext()) {result.add(new String(cursor.next()));}} catch (IOException e) {e.printStackTrace();}return result;});return keys;}/*** 管道技术提高性能* param type* param values* return*/public ListObject lRightPushPipeline(String type,CollectionString values){ListObject results stringRedisTemplate.executePipelined(new RedisCallbackObject() {public Object doInRedis(RedisConnection connection) throws DataAccessException {StringRedisConnection stringRedisConn (StringRedisConnection)connection;//集合转换数组String[] strings values.toArray(new String[values.size()]);//直接批量发送stringRedisConn.rPush(type, strings);return null;}});return results;}//同步操作允许一次性发送多个命令给Redis服务器doInRedis方法中执行了一系列Redis命令包括rPush和zRem// 这些命令会一起被打包发送到Redis服务器而不是在每个命令之间等待返回。//减少网络延迟但它仍然是同步的public ListObject refreshWithPipeline(String future_key,String topic_key,CollectionString values){ListObject objects stringRedisTemplate.executePipelined(new RedisCallbackObject() {NullableOverridepublic Object doInRedis(RedisConnection redisConnection) throws DataAccessException {StringRedisConnection stringRedisConnection (StringRedisConnection)redisConnection;//将任务转成一个字符串数组String[] strings values.toArray(new String[values.size()]);//把当前的任务放到connection中stringRedisConnection.rPush(topic_key,strings);//把当前的任务从zset中删除stringRedisConnection.zRem(future_key,strings);return null;}});return objects;}//基于setnx实现分布式锁/*** 加锁** param name* param expire* return*/public String tryLock(String name, long expire) {//expire过期时间为毫秒值name name _lock;String token UUID.randomUUID().toString();RedisConnectionFactory factory stringRedisTemplate.getConnectionFactory();RedisConnection conn factory.getConnection();try {//参考redis命令//set key value [EX seconds] [PX milliseconds] [NX|XX]//NX表示key不存在才设置成功。 EX设置过期时间Boolean result conn.set(name.getBytes(),//key的名称token.getBytes(),//值为uuidExpiration.from(expire, TimeUnit.MILLISECONDS),//过期时间RedisStringCommands.SetOption.SET_IF_ABSENT //NX);if (result ! null result)return token;} finally {RedisConnectionUtils.releaseConnection(conn, factory,false);}return null;}}
