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chore: 文件路径调整

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郝先瑞 2023-10-31 17:18:40 +08:00
parent 7691dec175
commit bbaccac646
2 changed files with 0 additions and 95 deletions
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69
mall-pms/pms-boot/src/main/java/com/youlai/mall/pms/common/util/BloomFilterUtils.java
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package com.youlai.mall.pms.common.util;
import com.google.common.hash.Funnel;
import com.google.common.hash.Hashing;
import static com.google.common.base.Preconditions.checkArgument;
/**
* 布隆过滤器，摘录自Google-guava包
*
* @author DaniR
* @date 2021/6/23 20:30
*/
public class BloomFilterUtils<T> {
private final int numHashFunctions;
private final int bitSize;
private final Funnel<T> funnel;
public BloomFilterUtils(Funnel<T> funnel, int expectedInsertions, double fpp) {
checkArgument(funnel != null, "funnel不能为空");
checkArgument(
expectedInsertions >= 0, "Expected insertions (%s) must be >= 0", expectedInsertions);
checkArgument(fpp > 0.0, "False positive probability (%s) must be > 0.0", fpp);
checkArgument(fpp < 1.0, "False positive probability (%s) must be < 1.0", fpp);
this.funnel = funnel;
// 计算bit数组长度
bitSize = optimalNumOfBits(expectedInsertions, fpp);
// 计算hash方法执行次数
numHashFunctions = optimalNumOfHashFunctions(expectedInsertions, bitSize);
}
public int[] murmurHash(T value) {
int[] offset = new int[numHashFunctions];
long hash64 = Hashing.murmur3_128().hashObject(value, funnel).asLong();
int hash1 = (int) hash64;
int hash2 = (int) (hash64 >>> 32);
for (int i = 1; i <= numHashFunctions; i++) {
int combinedHash = hash1 + i * hash2;
if (combinedHash < 0) {
combinedHash = ~combinedHash;
}
offset[i - 1] = combinedHash % bitSize;
}
return offset;
}
/**
* 计算bit数组长度
*/
private int optimalNumOfBits(long n, double p) {
if (p == 0) {
// 设定最小期望长度
p = Double.MIN_VALUE;
}
return (int) (-n * Math.log(p) / (Math.log(2) * Math.log(2)));
}
/**
* 计算hash方法执行次数
*/
private int optimalNumOfHashFunctions(long n, long m) {
return Math.max(1, (int) Math.round((double) m / n * Math.log(2)));
}
}

26
mall-ums/ums-boot/src/main/java/com/youlai/mall/ums/config/RestTemplateConfig.java
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package com.youlai.mall.ums.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
@Configuration
public class RestTemplateConfig {
@Bean
public RestTemplate restTemplate(ClientHttpRequestFactory simpleClientHttpRequestFactory) {
return new RestTemplate(simpleClientHttpRequestFactory);
}
@Bean
public ClientHttpRequestFactory simpleClientHttpRequestFactory() {
SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
factory.setReadTimeout(5000);//单位为ms
factory.setConnectTimeout(5000);//单位为ms
return factory;
}
}