簡介¶
解決緩存穿透Guava的BloomFilter布隆過濾器
內容¶
import java.nio.charset.Charset;
import com.google.common.hash.BloomFilter;
import com.google.common.hash.Funnels;
public class Bloom {
public static void main(String[] args) {
BloomFilter<String> b = BloomFilter.create(Funnels.stringFunnel(Charset.forName("utf-8")), 1000, 0.000001);
b.put("121");
b.put("122");
b.put("123");
System.out.println(b.mightContain("12321"));
BloomFilter<String> b1 = BloomFilter.create(Funnels.stringFunnel(Charset.forName("utf-8")), 1000, 0.000001);
b1.put("aba");
b1.put("abb");
b1.put("abc");
b1.putAll(b);
System.out.println(b1.mightContain("123"));
}
}