HostAndPort hostAndPort = RedisKeyScanHelper.hostPort(jedis); if (Objects.nonNull(hostAndPort)) { hostMap.put(jedis, hostAndPort.toString()); return hostMap.get(jedis); } return "UNKNOWN"; } // 自增统计 private long incrementCount(String hostAndPort) { AtomicLong counter = countMap.getO...
1.KEYS命令 KEYS pattern 1. 查找所有符合给定模式pattern(正则表达式)的 key 。时间复杂度为O(N),N为数据库里面key的数量。例如,Redis在一个有1百万个key的数据库里面执行一次查询需要的时间是40毫秒 。 警告: KEYS 的速度非常快,但在一个大的数据库中使用它仍然可能造成性能问题,如果你需要从一个数据集中查...
}//////阻塞命令:从list中key的头部移除一个值,并返回移除的值,阻塞时间为sp///publicstringBlockingRemoveStartFromList(stringkeys, TimeSpan?sp) {returnRedisBase.Core.BlockingRemoveStartFromList(keys, sp); }//////阻塞命令:从list中key的头部移除一个值,并返回移除的值,阻塞时间为sp///publicItemRef...
KEYS h[ae]llo 匹配 hello 和 hallo ,但不匹配 hillo print(r.keys("foo*")) 4.设置超时时间 expire(name ,time) 为某个redis的某个name设置超时时间 r.lpush("list5", 11, 22) r.expire("list5", time=3) print(r.lrange("list5", 0, -1)) time.sleep(3) print(r.lrange("list5", 0...
("002", "age"); System.out.println(age); //获得hash结构中的所有字段 Set keys = hashOperations.keys("002"); for (Object key : keys) { System.out.println(key); } //获得hash结构中的所有值 List values = hashOperations.values("002"); for (Object value : values) { System.out....
package com.hookapi.common;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.stereotype.Component;import java.util.List;import java.util.Map;import java.util.Set;import java.util.concurrent.TimeUnit;/*** @au...
Next, let’s pick up the hscan strategy, which is tailored to read all the field keys and field values of a particular hash key: public class Hscan implements ScanStrategy<Map.Entry<String, String>> { private String key; @Override public ScanResult<Entry<String, String>> scan(Jedis jedis,...
Certain Redis commands operate on specific data types; others are general. Examples of generic commands areDELandEXPIRE. They operate on keys and not on their values specifically. All those generic commands are defined insidedb.c. Moreoverdb.cimplements an API in order to perform certain operation...
跳表(Skip List)是一种基于有序链表的数据结构,通过多级索引的方式实现高效的查找、插入和删除操作。 跳表以空间换时间的方式优化了传统单链表的效率。在单链表中,即使数据是有序的,查找一个元素也需要从头到尾遍历整个链表,时间复杂度为O(n)。而在跳表中,通过建立多层索引来实现快速查找。顶层索引链表的节点数量远...
reset 执行resetpass,resetkeys,off,-@all category列表: {"keyspace", CMD_CATEGORY_KEYSPACE}, {"read", CMD_CATEGORY_READ}, {"write", CMD_CATEGORY_WRITE}, {"set", CMD_CATEGORY_SET}, {"sortedset", CMD_CATEGORY_SORTEDSET}, {"list", CMD_CATEGORY_LIST}, {"hash", CMD_CATEGORY_HASH},...