1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
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.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;
/**
* Caffeine本地缓存
*/
@Data
public class CaffeineCacheManager 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);
/**
* 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;
}
/**
* 创建缓存
* @param cacheName
* @return
*/
protected Cache createCache(String cacheName) {
return new CaffeineCache(cacheName, this.cacheBuilder.build(), true);
}
/**
* 获取缓存名
* @return
*/
@Override
public Collection<String> getCacheNames() {
return Collections.unmodifiableSet(this.cacheMap.keySet());
}
/**
* 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;
}
}
}