看名字，可以翻譯成模糊關鍵字的緩存。
看代碼，是memoryCache的包裝類，增加了key值（字元串）的比較。
可以對其它MemoryCache，增加自定義的字元串比較算法。
源碼：
/**
* Decorator for {@link MemoryCache}. Provides special feature for cache: some different keys are considered as
* equals (using {@link Comparator comparator}). And when you try to put some value into cache by key so entries with
* "equals" keys will be removed from cache before.<br />
* <b>NOTE:</b> Used for internal needs. Normally you don't need to use this class.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @since 1.0.0
*/
public class FuzzyKeyMemoryCache implements MemoryCache {
private final MemoryCache cache;
private final Comparator<String> keyComparator;
public FuzzyKeyMemoryCache(MemoryCache cache, Comparator<String> keyComparator) {
this.cache = cache;
this.keyComparator = keyComparator;
}
@Override
public boolean put(String key, Bitmap value) {
// Search equal key and remove this entry
synchronized (cache) {
String keyToRemove = null;
for (String cacheKey : cache.keys()) {
if (keyComparator.compare(key, cacheKey) == 0) {
keyToRemove = cacheKey;
break;
}
}
if (keyToRemove != null) {
cache.remove(keyToRemove);
}
}
return cache.put(key, value);
}
@Override
public Bitmap get(String key) {
return cache.get(key);
}
@Override
public Bitmap remove(String key) {
return cache.remove(key);
}
@Override
public void clear() {
cache.clear();
}
@Override
public Collection<String> keys() {
return cache.keys();
}
}