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缓存
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缓存 Guava Cache
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学习redis网站 redis.cn
RedisConfig
package com.alan.concurrency.example.cache;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
@Configuration
public class RedisConfig {
@Bean(name="redisPool")
public JedisPool jedisPool(@Value("${jedis.host}") String host,
@Value("${jedis.port}") int port){
return new JedisPool(host,port);
}
}
- RedisClient
package com.alan.concurrency.example.cache;
import org.springframework.stereotype.Component;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import javax.annotation.Resource;
@Component
public class RedisClient {
@Resource(name="redisPool")
private JedisPool jedisPool;
public void set(String key,String value) throws Exception{
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.set(key,value);
} finally {
if (jedis != null){
jedis.close();
}
}
}
public String get(String key) throws Exception{
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
return jedis.get(key);
} finally {
if (jedis != null){
jedis.close();
}
}
}
}
- CacheController
package com.alan.concurrency.example.cache;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/cache")
public class CacheController {
@Autowired
private RedisClient redisClient;
@RequestMapping("/set")
@ResponseBody
public String set(@RequestParam("k") String k , @RequestParam("v") String v) throws Exception{
redisClient.set(k,v);
return "SUCCESS";
}
@RequestMapping("/get")
@ResponseBody
public String get(@RequestParam("k") String k) throws Exception{
return redisClient.get(k);
}
}
高并发场景下缓存常见问题
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