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package cn.ibizlab.util.cache.cacheManager;
import lombok.Data;
import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.CaffeineSpec;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.caffeine.CaffeineCache;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.ObjectUtils;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
import cn.ibizlab.util.cache.cache.CusRedisCache;
import cn.ibizlab.util.cache.cache.LayeringCache;
/**
* 缓存分层
* 1级缓存为caffeine
* 2级缓存为redis
*/
@Data
public class LayeringCacheManager implements CacheManager {
private final ConcurrentMap<String, Cache> cacheMap = new ConcurrentHashMap<String, Cache>(16);
private static final int default_expire_after_write = 1;
private static final int default_initial_capacity = 5;
private static final int default_maximum_size = 1_000;
private Caffeine<Object, Object> cacheBuilder = Caffeine.newBuilder()
.expireAfterAccess(default_expire_after_write, TimeUnit.HOURS)
.initialCapacity(default_initial_capacity)
.maximumSize(default_maximum_size);
private RedisCacheWriter redisCacheWriter;
private RedisCacheConfiguration redisConfiguration;
private RedisTemplate<String, Object> redisTemplate;
public LayeringCacheManager(RedisCacheWriter redisCacheWriter , RedisCacheConfiguration redisConfiguration , RedisTemplate<String, Object> redisTemplate ){
this.redisCacheWriter=redisCacheWriter;
this.redisConfiguration=redisConfiguration;
this.redisTemplate= redisTemplate;
}
/**
* 获取缓存对象
* @param cacheName
* @return
*/
@Override
public Cache getCache(String cacheName) {
Cache cache = this.cacheMap.get(cacheName);
if (cache == null) {
synchronized (this.cacheMap) {
cache = this.cacheMap.get(cacheName);
if (cache == null) {
cache = createCache(cacheName);
this.cacheMap.put(cacheName, cache);
}
}
}
return cache;
}
/**
* 获取集合中的缓存
* @return
*/
@Override
public Collection<String> getCacheNames() {
return Collections.unmodifiableSet(this.cacheMap.keySet());
}
/**
* 创建缓存
* @param cacheName
* @return
*/
protected Cache createCache(String cacheName) {
return new LayeringCache(cacheName,new CaffeineCache(cacheName, this.cacheBuilder.build(), true),new CusRedisCache(cacheName, redisCacheWriter, redisConfiguration),redisTemplate);
}
/**
* 缓存配置[缓存容量大小、时长等]
* @param caffeineCacheConfig
*/
public void setCaffeineCacheConfig(CaffeineSpec caffeineCacheConfig) {
Caffeine<Object, Object> cacheBuilder = Caffeine.from(caffeineCacheConfig);
if (!ObjectUtils.nullSafeEquals(this.cacheBuilder, cacheBuilder)) {
this.cacheBuilder = cacheBuilder;
}
}
}