c语言sscanf函数的用法是什么
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2023-07-07
Spring集成jedis的配置与使用简单实例
jedis是redis的java客户端,spring将redis连接池作为一个bean配置。
redis连接池分为两种,一种是“redis.clients.jedis.ShardedJedisPool”,这是基于hash算法的一种分布式集群redis客户端连接池。
另一种是“redis.clients.jedis.JedisPool”,这是单机环境适用的redis连接池。
maven导入相关包:
ShardedJedisPool是redis集群客户端的对象池,可以通过他来操作ShardedJedis,下面是ShardedJedisPool的xml配置,spring-jedis.xml:
xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:context="http://springframework.org/schema/context" xsi:schemaLocation="http://springframework.org/schema/beans http://springframework.org/schema/beans/spring-beans.xsd http://springframework.org/schema/context http://springframework.org/schema/context/spring-context.xsd">
xmlns:xsi="http://w3.org/2001/XMLSchema-instance"
xmlns:context="http://springframework.org/schema/context"
xsi:schemaLocation="http://springframework.org/schema/beans
http://springframework.org/schema/beans/spring-beans.xsd
http://springframework.org/schema/context http://springframework.org/schema/context/spring-context.xsd">
下面是单机环境下redis连接池的配置:
xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:context="http://springframework.org/schema/context" xsi:schemaLocation="http://springframework.org/schema/beans http://springframework.org/schema/beans/spring-beans.xsd http://springframework.org/schema/context http://springframework.org/schema/context/spring-context.xsd">
xmlns:xsi="http://w3.org/2001/XMLSchema-instance"
xmlns:context="http://springframework.org/schema/context"
xsi:schemaLocation="http://springframework.org/schema/beans
http://springframework.org/schema/beans/spring-beans.xsd
http://springframework.org/schema/context http://springframework.org/schema/context/spring-context.xsd">
对应的classpath:properties/redis.properties.xml为:
#最大分配的对象数
redis.pool.maxActive=200
#最大能够保持idel状态的对象数
redis.pool.maxIdle=50
redis.pool.minIdle=10
redis.pool.maxWaitMillis=20000
#当池内没有返回对象时,最大等待时间
redis.pool.maxWait=300
#格式:redis://:[密码]@[服务器地址]:[端口]/[db index]
redis.uri = redis://:12345@127.0.0.1:6379/0
redis.host = 127.0.0.1
redis.port = 6379
redis.timeout=30000
redis.password = 12345
redis.database = 0
二者操作代码类似,都是先注入连接池,然后通过连接池获得jedis实例,通过实例对象操作redis。
ShardedJedis操作:
@Autowired
private ShardedJedisPool shardedJedisPool;//注入ShardedJedisPool
@RequestMapping(value = "/demo_set",method = RequestMethod.GET)
@ResponseBody
public String demo_set(){
//获取ShardedJedis对象
ShardedJedis shardJedis = shardedJedisPool.getResource();
//存入键值对
shardJedis.set("key1","hello jedis");
//回收ShardedJedis实例
shardJedis.close();
return "set";
}
@RequestMapping(value = "/demo_get",method = RequestMethod.GET)
@ResponseBody
public String demo_get(){
ShardedJedis shardedJedis = shardedJedisPool.getResource();
//根据键值获得数据
String result = shardedJedis.get("key1");
shardedJedis.close();
return result;
}
Jedis操作:
@Autowired
private JedisPool jedisPool;//注入JedisPool
@RequestMapping(value = "/demo_set",method = RequestMethod.GET)
@ResponseBody
public String demo_set(){
//获取ShardedJedis对象
Jedis jedis = jedisPool.getResource();
//存入键值对
jedis.set("key2","hello jedis one");
//回收ShardedJedis实例
jedis.close();
return "set";
}
@RequestMapping(value = "/demo_get",method = RequestMethod.GET)
@ResponseBody
public String demo_get(){
Jedis jedis = jedisPool.getResource();
//根据键值获得数据
String result = jedis.get("key2");
jedis.close();
return result;
}
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