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@一贤爱吃土豆
参考:http://redisdoc.com/
远程字典服务。用于缓存服务器、计数器、MQ(发布和订阅)、分布式锁setnx
version: '3.1'
services:
redis:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis
environment:
- TZ=Asia/Shanghai
ports:
- 6379:6379
进去Redis容器的内部
docker exec -it 容器id bash
在容器内部,使用redis-cli连接
下载地址:https://github.com/lework/RedisDesktopManager-Windows/releases/download/2019.5/redis-desktop-manager-2019.5.zip
常用的5种数据结构:
另外三种数据结构:
key-string:最常用的,一般用于存储一个值。
key-hash:存储一个对象数据的。
key-list:使用list结构实现栈和队列结构。
key-set:交集,差集和并集的操作。
key-zset:排行榜,积分存储等操作。
#1. 添加值:set key value
#2. 取值:get key
#3. 批量操作:mset key value [key value...] 或者 mget key [key...]
#4. 自增命令(自增1):incr key
#5. 自减命令(自减1):decr key
#6. 自增或自减指定数量:incrby key increment 或者 decrby key increment
#7. 设置值的同时,指定生存时间(每次向Redis中添加数据时,尽量都设置上生存时间):
setex key second value
#8. 设置值,如果当前key不存在的话(如果这个key存在,什么事都不做,如果这个key不存在,和set命令一样):
setnx key value
#9. 在key对应的value后,追加内容:append key value
#10. 查看value字符串的长度:strlen key
#1. 存储数据:hset key field value
#2. 获取数据:hget key field
#3. 批量操作:
hmset key field value [field value ...]
hmget key field [field ...]
#4. 自增(指定自增的值):hincrby key field increment
#5. 设置值(如果key-field不存在,那么就正常添加,如果存在,什么事都不做):
hsetnx key field value
#6. 检查field是否存在:hexists key field
#7. 删除key对应的field,可以删除多个:hdel key field [field ...]
#8. 获取当前hash结构中的全部field和value:hgetall key
#9. 获取当前hash结构中的全部field:hkeys key
#10. 获取当前hash结构中的全部value:hvals key
#11. 获取当前hash结构中field的数量:hlen key
#1. 存储数据(从左侧插入数据,从右侧插入数据):
lpush key value [value ...]
rpush key value [value ...]
#2. 存储数据(如果key不存在,什么事都不做,如果key存在,但是不是list结构,什么都不做):
lpushx key value
rpushx key value
#3. 修改数据(在存储数据时,指定好你的索引位置,覆盖之前索引位置的数据,index超出整个列表的长度,也会失败):
lset key index value
#4. 弹栈方式获取数据(左侧弹出数据,从右侧弹出数据):
lpop key
rpop key
#5. 获取指定索引范围的数据(start从0开始,stop输入-1,代表最后一个,-2代表倒数第二个):
lrange key start stop
#6. 获取指定索引位置的数据:lindex key index
#7. 获取整个列表的长度:llen key
#8. 删除列表中的数据(他是删除当前列表中的count个value值(重复数据),count > 0从左侧向右侧删除,count < 0从右侧向左侧删除,count == 0删除列表中全部的value):
lrem key count value
#9. 保留列表中的数据(保留你指定索引范围内的数据,超过整个索引范围被移除掉):
ltrim key start stop
#10. 将一个列表中最后的一个数据,插入到另外一个列表的头部位置:
rpoplpush list1 list2
#1. 存储数据:sadd key member [member ...]
#2. 获取数据(获取全部数据):smembers key
#3. 随机获取一个数据(获取的同时,移除数据,count默认为1,代表弹出数据的数量):
spop key [count]
#4. 交集(取多个set集合交集):sinter set1 set2 ...
#5. 并集(获取全部集合中的数据):sunion set1 set2 ...
#6. 差集(获取多个集合中不一样的数据):sdiff set1 set2 ...
#7. 删除数据:srem key member [member ...]
#1. 添加数据(score必须是数值。member不允许重复的。):
zadd key score member [score member ...]
#2. 修改member的分数(如果member是存在于key中的,正常增加分数,如果memeber不存在,这个命令就相当于zadd):
zincrby key increment member
#3. 查看指定的member的分数:zscore key member
#4. 获取zset中数据的数量:zcard key
#5. 根据score的范围查询member数量:zcount key min max
#6. 删除zset中的成员:zrem key member [member...]
#7. 根据分数从小到大排序,获取指定范围内的数据(withscores如果添加这个参数,那么会返回member对应的分数):
zrange key start stop [withscores]
#8. 根据分数从大到小排序,获取指定范围内的数据(withscores如果添加这个参数,那么会返回member对应的分数):
zrevrange key start stop [withscores]
#9. 根据分数的返回去获取member(withscores代表同时返回score,添加limit,就和MySQL中一样,如果不希望等于min或者max的值被查询出来可以采用 ‘(分数’ 相当于 < 但是不等于的方式,最大值和最小值使用+inf和-inf来标识):
zrangebyscore key min max [withscores] [limit offset count]
#10. 根据分数的返回去获取member(withscores代表同时返回score,添加limit,就和MySQL中一样):
zrangebyscore key max min [withscores] [limit offset count]
#1. 查看Redis中的全部的key(pattern:* ,xxx*,*xxx):
keys pattern
#2. 查看某一个key是否存在(1 - key存在,0 - key不存在):
exists key
#3. 删除key:del key [key ...]
#4. 设置key的生存时间,单位为秒,单位为毫秒,设置还能活多久:
expire key second
pexpire key milliseconds
#5. 设置key的生存时间,单位为秒,单位为毫秒,设置能活到什么时间点:
expireat key timestamp
pexpireat key milliseconds
#6. 查看key的剩余生存时间,单位为秒,单位为毫秒(-2 - 当前key不存在,-1 - 当前key没有设置生存时间,具体剩余的生存时间):
ttl key
pttl key
#7. 移除key的生存时间(1 - 移除成功,0 - key不存在生存时间,key不存在):
persist key
#8. 选择操作的库:select 0~15
#9. 移动key到另外一个库中:move key db
#1. 清空当前所在的数据库:flushdb
#2. 清空全部数据库:flushall
#3. 查看当前数据库中有多少个key:dbsize
#4. 查看最后一次操作的时间:lastsave
#5. 实时监控Redis服务接收到的命令:monitor
<dependencies>
<!-- 1、 Jedis-->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<!-- 2、 Junit测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- 3、 Lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.20</version>
</dependency>
</dependencies>
public class Demo1 {
@Test
public void set(){
//1. 连接Redis
Jedis jedis = new Jedis("192.168.199.109",6379);
//2. 操作Redis - 因为Redis的命令是什么,Jedis的方法就是什么
jedis.set("name","李四");
//3. 释放资源
jedis.close();
}
@Test
public void get(){
//1. 连接Redis
Jedis jedis = new Jedis("192.168.199.109",6379);
//2. 操作Redis - 因为Redis的命令是什么,Jedis的方法就是什么
String value = jedis.get("name");
System.out.println(value);
//3. 释放资源
jedis.close();
}
}
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {
private Integer id;
private String name;
private Date birthday;
}
<!-- 4. 导入spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
public class Demo2 {
// 存储对象 - 以byte[]形式存储在Redis中
@Test
public void setByteArray(){
//1. 连接Redis服务
Jedis jedis = new Jedis("192.168.199.109",6379);
//------------------------------------------------
//2.1 准备key(String)-value(User)
String key = "user";
User value = new User(1,"张三",new Date());
//2.2 将key和value转换为byte[]
byte[] byteKey = SerializationUtils.serialize(key);
byte[] byteValue = SerializationUtils.serialize(value);
//2.3 将key和value存储到Redis
jedis.set(byteKey,byteValue);
//------------------------------------------------
//3. 释放资源
jedis.close();
}
// 获取对象 - 以byte[]形式在Redis中获取
@Test
public void getByteArray(){
//1. 连接Redis服务
Jedis jedis = new Jedis("192.168.199.109",6379);
//------------------------------------------------
//2.1 准备key
String key = "user";
//2.2 将key转换为byte[]
byte[] byteKey = SerializationUtils.serialize(key);
//2.3 jedis去Redis中获取value
byte[] value = jedis.get(byteKey);
//2.4 将value反序列化为User对象
User user = (User) SerializationUtils.deserialize(value);
//2.5 输出
System.out.println("user:" + user);
//------------------------------------------------
//3. 释放资源
jedis.close();
}
}
<!-- 导入fastJSON -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
public class Demo3 {
// 存储对象 - 以String形式存储
@Test
public void setString(){
//1. 连接Redis
Jedis jedis = new Jedis("192.168.199.109",6379);
//2.1 准备key(String)-value(User)
String stringKey = "stringUser";
User value = new User(2,"李四",new Date());
//2.2 使用fastJSON将value转化为json字符串
String stringValue = JSON.toJSONString(value);
//2.3 存储到Redis中
jedis.set(stringKey,stringValue);
//3. 释放资源
jedis.close();
}
// 获取对象 - 以String形式获取
@Test
public void getString(){
//1. 连接Redis
Jedis jedis = new Jedis("192.168.199.109",6379);
//2.1 准备一个key
String key = "stringUser";
//2.2 去Redis中查询value
String value = jedis.get(key);
//2.3 将value反序列化为User
User user = JSON.parseObject(value, User.class);
//2.4 输出
System.out.println("user:" + user);
//3. 释放资源
jedis.close();
}
}
@Test
public void pool2(){
//1. 创建连接池配置信息
GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
poolConfig.setMaxTotal(100); // 连接池中最大的活跃数
poolConfig.setMaxIdle(10); // 最大空闲数
poolConfig.setMinIdle(5); // 最小空闲数
poolConfig.setMaxWaitMillis(3000); // 当连接池空了之后,多久没获取到Jedis对象,就超时
//2. 创建连接池
JedisPool pool = new JedisPool(poolConfig,"192.168.199.109",6379);
//3. 通过连接池获取jedis对象
Jedis jedis = pool.getResource();
//4. 操作
String value = jedis.get("stringUser");
System.out.println("user:" + value);
//5. 释放资源
jedis.close();
}
// Redis管道的操作
@Test
public void pipeline(){
//1. 创建连接池
JedisPool pool = new JedisPool("192.168.199.109",6379);
long l = System.currentTimeMillis();
/*//2. 获取一个连接对象
Jedis jedis = pool.getResource();
//3. 执行incr - 100000次
for (int i = 0; i < 100000; i++) {
jedis.incr("pp");
}
//4. 释放资源
jedis.close();*/
//================================
//2. 获取一个连接对象
Jedis jedis = pool.getResource();
//3. 创建管道
Pipeline pipelined = jedis.pipelined();
//3. 执行incr - 100000次放到管道中
for (int i = 0; i < 100000; i++) {
pipelined.incr("qq");
}
//4. 执行命令
pipelined.syncAndReturnAll();
//5. 释放资源
jedis.close();
System.out.println(System.currentTimeMillis() - l);
}
# docker-compose.yml
version: "3.1"
services:
nginx:
image: daocloud.io/library/nginx:latest
restart: always
container_name: nginx
ports:
- 80:80
volumes:
- ./nginx_conf:/etc/nginx/conf.d
tomcat1:
image: daocloud.io/library/tomcat:8.5.15-jre8
restart: always
container_name: tomcat1
ports:
- 8081:8080
environment:
- TZ=Asia/Shanghai
volumes:
- ./tomcat1_webapps:/usr/local/tomcat/webapps
tomcat2:
image: daocloud.io/library/tomcat:8.5.15-jre8
restart: always
container_name: tomcat2
ports:
- 8082:8080
environment:
- TZ=Asia/Shanghai
volumes:
- ./tomcat2_webapps:/usr/local/tomcat/webapps
mysql:
image: daocloud.io/library/mysql:5.7.24
restart: always
container_name: mysql
ports:
- 3306:3306
environment:
- MYSQL_ROOT_PASSWORD=root
- TZ=Asia/Shanghai
volumes:
- ./mysql_data:/var/lib/mysql
command:
--lower_case_table_names=1 # 忽略表名的大小写
//登录 Controller
@RequestMapping("/dologin")
@ResponseBody
public AjaxMessage login(String email, String password, HttpSession session,HttpServletResponse resp) {
//1. 调用service执行认证,返回Redis的key
String key = adminUserService.doLoginByRedis(email,password);
//2. 判断返回的key是否为null
if(StringUtils.isEmpty(key)) {
//2.1 如果为null -> 认证失败
return new AjaxMessage(false);
}
//3. 查询用户的权限信息,并且放到Redis中
menuService.setUserMenuList(key);
//4. 将key作为Cookie写回浏览器端
Cookie cookie = new Cookie(AdminConstants.USER_COOKIE_KEY,key);
cookie.setPath("/");
cookie.setMaxAge(9999999);
resp.addCookie(cookie);
//5. 返回认证成功信息
return new AjaxMessage(true);
}
//AdminUserService实现认证功能
@Override
public String doLoginByRedis(String email, String password) throws JsonProcessingException {
//1. 判断用户名和密码是否正确
AdminUser user = adminUserMapper.getUserByEmail(email);
//2. 如果user==null , 登录失败,返回null
if(user == null){
return null;
}
//3. user != null 登录成功,声明一个UUID,作为存储到Redis中的key,返回key到Controller
//3.1 声明key和value
String key = UUID.randomUUID().toString();
ObjectMapper mapper = new ObjectMapper();
String value = mapper.writeValueAsString(user);
//3.2 将key和value存储到Redis中
Jedis jedis = pool.getResource();
jedis.setex(AdminConstants.SESSION_USER + key,600,value);
jedis.close();
//4. 返回结果
return key;
}
//MenuService将用户的权限信息存储到Redis中
@Override
public void setUserMenuList(String key) throws JsonProcessingException {
//1. 获取用户的id
Jedis jedis = pool.getResource();
String value = jedis.get(AdminConstants.SESSION_USER + key);
ObjectMapper mapper = new ObjectMapper();
AdminUser adminUser = mapper.readValue(value, AdminUser.class);
//2. 数据库查询用户权限信息
List<Menu> menuList = menuMapper.getUserMenu(adminUser.getId());
//3. 存储到Redis
String menuKey = AdminConstants.USER_MENU + key;
String menuValue = mapper.writeValueAsString(menuList);
jedis.setex(menuKey,600,menuValue);
jedis.close();
}
//在filter中获取Jedis连接池的方式
private JedisPool pool;
public void init(FilterConfig filterConfig) throws ServletException {
ServletContext servletContext = filterConfig.getServletContext();
WebApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(servletContext);
pool = (JedisPool) context.getBean("jedisPool");
}
// 修改doFilter方法
// 获取认证信息
String key = null;
// 获取Cookie
Cookie[] cookies = request.getCookies();
if(cookies != null){
for (Cookie cookie : cookies) {
if(cookie.getName().equals(AdminConstants.USER_COOKIE_KEY)){
key = cookie.getValue();
}
}
}
// 没有认证过,cookie中没有获取到指定的信息
if(key == null){
response.sendRedirect(request.getContextPath() + redirectUrl);
return;
}
// 从Session域中获取用户认证信息
// AdminUser user = (AdminUser)
session.getAttribute(AdminConstants.SESSION_USER);
// 修改为从Redis中获取用户的信息
Jedis jedis = pool.getResource();
String value = jedis.get(AdminConstants.SESSION_USER + key);
if (value == null) {
jedis.close();
response.sendRedirect(request.getContextPath() + redirectUrl);
return;
}
// ...
//2.2 获取权限信息
// 从Session中获取了用户的权限信息
String menuValue = jedis.get(AdminConstants.USER_MENU + key);
// 重置key的生存时间
jedis.expire(AdminConstants.SESSION_USER + key,600);
jedis.expire(AdminConstants.USER_MENU + key,600);
jedis.close();
ObjectMapper mapper = new ObjectMapper();
List<Menu> menus = mapper.readValue(menuValue, new TypeReference<List<Menu>>() {});3
@RequestMapping("/side")
@ResponseBody
public AjaxMessage getMenuTree(@CookieValue(value = AdminConstants.USER_COOKIE_KEY,required = false)String key, HttpSession session, HttpServletResponse response) throws JsonProcessingException {
// 修改AdminUser user = (AdminUser) session.getAttribute(AdminConstants.SESSION_USER);
Jedis jedis = pool.getResource();
String value = jedis.get(AdminConstants.SESSION_USER + key);
ObjectMapper mapper = new ObjectMapper();
AdminUser user = mapper.readValue(value, AdminUser.class);
if (user == null) {
try {
response.sendRedirect("/login.html");
} catch (IOException e) {
e.printStackTrace();
}
return new AjaxMessage(true, null, new ArrayList<>());
}
jedis.expire(AdminConstants.SESSION_USER + key,600);
jedis.close();
List<Menu> menus = menuService.getUserPermission(user.getId());
return new AjaxMessage(true, null, menus);
}
version: '3.1'
services:
redis:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis
environment:
- TZ=Asia/Shanghai
ports:
- 6379:6379
volumes:
- ./conf/redis.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
# redis.conf
requirepass 密码
// 使用当前有参构造设置密码
public JedisPool(final GenericObjectPoolConfig poolConfig, final String host, int port,int timeout, final String password)
version: "3.1"
services:
redis1:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis1
environment:
- TZ=Asia/Shanghai
ports:
- 7001:6379
volumes:
- ./conf/redis1.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis2:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis2
environment:
- TZ=Asia/Shanghai
ports:
- 7002:6379
volumes:
- ./conf/redis2.conf:/usr/local/redis/redis.conf
links:
- redis1:master
command: ["redis-server","/usr/local/redis/redis.conf"]
redis3:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis3
environment:
- TZ=Asia/Shanghai
ports:
- 7003:6379
volumes:
- ./conf/redis3.conf:/usr/local/redis/redis.conf
links:
- redis1:master
command: ["redis-server","/usr/local/redis/redis.conf"]
# redis2和redis3从节点配置
replicaof master 6379
version: "3.1"
services:
redis1:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis1
environment:
- TZ=Asia/Shanghai
ports:
- 7001:6379
volumes:
- ./conf/redis1.conf:/usr/local/redis/redis.conf
- ./conf/sentinel1.conf:/data/sentinel.conf # 添加的内容
command: ["redis-server","/usr/local/redis/redis.conf"]
redis2:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis2
environment:
- TZ=Asia/Shanghai
ports:
- 7002:6379
volumes:
- ./conf/redis2.conf:/usr/local/redis/redis.conf
- ./conf/sentinel2.conf:/data/sentinel.conf # 添加的内容
links:
- redis1:master
command: ["redis-server","/usr/local/redis/redis.conf"]
redis3:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis3
environment:
- TZ=Asia/Shanghai
ports:
- 7003:6379
volumes:
- ./conf/redis3.conf:/usr/local/redis/redis.conf
- ./conf/sentinel3.conf:/data/sentinel.conf # 添加的内容
links:
- redis1:master
command: ["redis-server","/usr/local/redis/redis.conf"]
# 哨兵需要后台启动
daemonize yes
# 指定Master节点的ip和端口(主)
sentinel monitor master localhost 6379 2
# 指定Master节点的ip和端口(从)
sentinel monitor master master 6379 2
# 哨兵每隔多久监听一次redis架构
sentinel down-after-milliseconds mymaster 10000
redis-sentinel sentinel.conf
# docker-compose.yml
version: "3.1"
services:
redis1:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis1
environment:
- TZ=Asia/Shanghai
ports:
- 7001:7001
- 17001:17001
volumes:
- ./conf/redis1.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis2:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis2
environment:
- TZ=Asia/Shanghai
ports:
- 7002:7002
- 17002:17002
volumes:
- ./conf/redis2.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis3:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis3
environment:
- TZ=Asia/Shanghai
ports:
- 7003:7003
- 17003:17003
volumes:
- ./conf/redis3.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis4:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis4
environment:
- TZ=Asia/Shanghai
ports:
- 7004:7004
- 17004:17004
volumes:
- ./conf/redis4.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis5:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis5
environment:
- TZ=Asia/Shanghai
ports:
- 7005:7005
- 17005:17005
volumes:
- ./conf/redis5.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]
redis6:
image: daocloud.io/library/redis:5.0.7
restart: always
container_name: redis6
environment:
- TZ=Asia/Shanghai
ports:
- 7006:7006
- 17006:17006
volumes:
- ./conf/redis6.conf:/usr/local/redis/redis.conf
command: ["redis-server","/usr/local/redis/redis.conf"]