Redis安全策略详解

<dependency>
    <groupId>com.Google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>22.0</version>
</dependency>

public class BlongTest {
    
    private static Integer size = 1000000;
    public static void main(String[] args) {
        BloomFilter<Integer> integerBloomFilter = BloomFilter.create(Funnels.integerFunnel(), size, 0.01);
        for (int i = 0; i < size; i++) {
            integerBloomFilter.put(i);
        }
        // 从布隆中查询数据是否存在
        ArrayList<Integer> strings = new ArrayList<>();
        for (int j = size; j < size + 10000; j++) {
            if (integerBloomFilter.mightcontain(j)) {
                strings.add(j);
            }
        }
        System.out.println("误判数量:" + strings.size());
    }
}

@RequestMapping("/getOrder")
public OrderEntity getOrder(Integer orderId) {
    if (integerBloomFilter != null) {
        if (!integerBloomFilter.mightContain(orderId)) {
            System.out.println("从布隆过滤器中检测到该key不存在");
            return null;
        }
    }
    // 1.先查询Redis中数据是否存在
    OrderEntity orderRedisEntity = (OrderEntity) redisTemplateUtils.getObject(orderId + "");
    if (orderRedisEntity != null) {
        System.out.println("直接从Redis中返回数据");
        return orderRedisEntity;
    }
    // 2. 查询数据库的内容
    System.out.println("从DB查询数据");
    OrderEntity orderDBEntity = orderMapper.getOrderById(orderId);
    if (orderDBEntity != null) {
        System.out.println("将Db数据放入到Redis中");
        redisTemplateUtils.setObject(orderId + "", orderDBEntity);
    }
    return orderDBEntity;
}

@RequestMapping("/dbToBulong")
public String dbToBulong() {
    List<Integer> orderIds = orderMapper.getOrderIds();
    integerBloomFilter = BloomFilter.create(Funnels.integerFunnel(), orderIds.size(), 0.01);
    for (int i = 0; i < orderIds.size(); i++) {
        integerBloomFilter.put(orderIds.get(i));
    }
    return "success";
}