在使用Redis优化MyBatis媒体平台的性能时,可以从以下几个方面入手:
以下是一个简单的示例,展示如何在MyBatis中使用Redis缓存查询结果:
import org.apache.ibatis.cache.Cache;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.plugin.*;
import redis.clients.jedis.Jedis;
import java.sql.Connection;
import java.util.Properties;
@CacheNamespace(flushInterval = 60000) // 设置缓存刷新间隔为60秒
@MapperCacheNamespace(implementation = RedisCache.class)
public interface UserMapper {
@Select("SELECT * FROM users WHERE id = #{id}")
User getUserById(@Param("id") int id);
}
public class RedisCache implements Cache {
private JedisPool jedisPool;
public RedisCache(Properties properties) {
jedisPool = new JedisPool(properties);
}
@Override
public Object get(Object key) {
try (Jedis jedis = jedisPool.getResource()) {
String cacheKey = "user:" + key;
String userJson = jedis.get(cacheKey);
return userJson != null ? userJson : null;
}
}
@Override
public void put(Object key, Object value) {
try (Jedis jedis = jedisPool.getResource()) {
String cacheKey = "user:" + key;
jedis.set(cacheKey, value.toString());
}
}
@Override
public void remove(Object key) {
try (Jedis jedis = jedisPool.getResource()) {
String cacheKey = "user:" + key;
jedis.del(cacheKey);
}
}
@Override
public void clear() {
try (Jedis jedis = jedisPool.getResource()) {
jedis.flushAll();
}
}
@Override
public int getSize(Object key) {
try (Jedis jedis = jedisPool.getResource()) {
String cacheKey = "user:" + key;
return jedis.dbSize();
}
}
}
通过上述优化措施,可以显著提高MyBatis媒体平台的性能,减少数据库的压力,提升系统的响应速度和稳定性。
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