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      ["id"]=>
      string(9) "308660876"
      ["text"]=>
      string(45) "安全测试前置实践1-白盒&黑盒扫描"
      ["intro"]=>
      string(411) "本文我们将以围绕系统安全质量提升为目标，讲述在安全前置扫描上实践开展过程。希望通过此篇文章，帮助大家更深入、透彻地了解安全测试，能快速开展安全测试。
    

作者：京东物流 陈维
一、引言
G.J.Myers在《软件测试的艺术》中提出：从心理学角度来说，测试是一个为了寻找错误而运行程序的过程。
"
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      ["tagsname"]=>
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      string(29) "["160","2823","14120","5741"]"
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      ["text"]=>
      string(24) "vulnhub靶场之ORASI: 1"
      ["intro"]=>
      string(256) "准备：

攻击机：虚拟机kali、本机win10。
靶机：Orasi: 1，下载地址：https://download.vulnhub.com/orasi/Orasi.ova，下载后直接vbox打开即可。
知识点：hex编码、ida逆向、AndroidKiller逆向、ffuf爆破、ssti漏洞、s"
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      ["text"]=>
      string(92) "C# Kafka重置到最新的偏移量，即从指定的Partition订阅消息使用Assign方法"
      ["intro"]=>
      string(428) "在使用Kafka的过程中，消费者断掉之后，再次开始消费时，消费者会从断掉时的位置重新开始消费。
场景再现：比如昨天消费者晚上断掉了，今天上午我们会发现kafka消费的数据不是最新的，而是昨天晚上的数据，由于数据量比较多，也不会及时的消费到今天上午的数据，这个时候就需要我们对偏移量进行重置为最新的，以"
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      ["text"]=>
      string(129) "迁移学习（）《Attract, Perturb, and Explore: Learning a Feature Alignment Network for Semi-supervised Domain Adaptation》"
      ["intro"]=>
      string(194) "论文信息

论文标题：Attract, Perturb, and Explore: Learning a Feature Alignment Network for Semi-supervised Domain Adaptation论文作者：Taekyung Kim论文来源：2020 ECCV论文地"
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      ["text"]=>
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      ["intro"]=>
      string(428) "在使用Kafka的过程中，消费者断掉之后，再次开始消费时，消费者会从断掉时的位置重新开始消费。
场景再现：比如昨天消费者晚上断掉了，今天上午我们会发现kafka消费的数据不是最新的，而是昨天晚上的数据，由于数据量比较多，也不会及时的消费到今天上午的数据，这个时候就需要我们对偏移量进行重置为最新的，以"
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      string(10) ".NET|Kafka"
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      string(9) "308660870"
      ["text"]=>
      string(42) "Django怎么使用原生SQL查询数据库"
      ["intro"]=>
      string(392) "这篇文章主要介绍“Django怎么使用原生SQL查询数据库”，在日常操作中，相信很多人在Django怎么使用原生SQL查询数据库问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Django怎么使用原生SQL查询数据库”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
D"
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    array(10) {
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      ["text"]=>
      string(37) "Express怎么实现定时发送邮件"
      ["intro"]=>
      string(432) "今天小编给大家分享一下Express怎么实现定时发送邮件的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
在开发中我们有时候需要每隔 一段时间发送一次电子邮件，或者在某个特定的时间进行发"
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      ["text"]=>
      string(29) "mysql运维------分库分表"
      ["intro"]=>
      string(412) "1. 介绍
问题分析:
随着互联网以及移动互联网的发展，应用系统的数据量也是成指数式增长，若采用单数据库进行数据存储，存在以下性能瓶颈：
IO瓶颈：热点数据太多，数据库缓存不足，产生大量磁盘IO，效率较低。请求数据太多，带宽不够，网络IO瓶颈。CPU瓶颈：排序、分组、连接查询、聚合统计等SQL会耗费"
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      ["text"]=>
      string(41) "ASP.NET Core - 缓存之内存缓存(下)"
      ["intro"]=>
      string(292) "话接上篇 [ASP.NET Core - 缓存之内存缓存(上)]，所以这里的目录从 2.4 开始。

2.4 MemoryCacheEntryOptions
MemoryCacheEntryOptions 是内存缓存配置类，可以通过它配置缓存相关的策略。除了上面讲到的过期时间，我们还能够设置下面这些"
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      ["intro"]=>
      string(334) "SPI协议是由摩托罗拉公司提出的通讯协议(Serial Peripheral Interface)，即串行外设接口。广泛用在ADC、LCD等设备与MCU间，要求通讯速率较高的场合。区分它与I2C协议差异以及FLASH存储器与EEPROM存储器的区别。下面我们分别对SPI协议的物理层及协议层进行讲解。"
      ["username"]=>
      string(8) "Kaelthas"
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      string(5) "STM32"
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      string(8) "["1139"]"
      ["createtime"]=>
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<p><span style="color: rgba(255, 0, 0, 1); background: rgba(255, 255, 0, 1)">一、</span></p>
<p>[#|2013-09-16T18:19:02.663+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=23364;_ThreadName=Thread-2;|2013-09-1618:19:02,663 WARN  DataStreamerException: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
 File:xxx could only be replicatedto 0 nodes, instead of 1</p>
<p>         atorg.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1558)</p>
<p>         atorg.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:696)</p>
<p>         atsun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)</p>
<p>         atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)</p>
<p>         atjava.lang.reflect.Method.invoke(Method.java:597)</p>
<p>         atorg.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)</p>
<p>         atorg.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)</p>
<p>         atorg.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)</p>
<p>         atjava.security.AccessController.doPrivileged(Native Method)</p>
<p>         atjavax.security.auth.Subject.doAs(Subject.java:396)</p>
<p>         atorg.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)</p>
<p>         atorg.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)</p>
<p> </p>
<p>         atorg.apache.hadoop.ipc.Client.call(Client.java:1070)</p>
<p>         atorg.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)</p>
<p>         at$Proxy140.addBlock(Unknown Source)</p>
<p>         atsun.reflect.GeneratedMethodAccessor84.invoke(Unknown Source)</p>
<p>         atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)</p>
<p>         atjava.lang.reflect.Method.invoke(Method.java:597)</p>
<p>         atorg.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)</p>
<p>         atorg.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)</p>
<p>         at$Proxy140.addBlock(Unknown Source)</p>
<p>         atorg.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3510)</p>
<p>         atorg.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3373)</p>
<p>         atorg.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2600(DFSClient.java:2589)</p>
<p>         atorg.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2829)</p>
<p> </p>
<p> |#]</p>
<p> </p>
<p> </p>
<p><span style="background: rgba(255, 255, 0, 1)">二、</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:19:02.664+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=23367;_ThreadName=Thread-2;|2013-09-1618:19:02,664 WARN  Error Recovery forblock null bad datanode[0] nodes
 == null </span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:19:02.664+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=23367;_ThreadName=Thread-2;|2013-09-1618:19:02,664 WARN  Could not get blocklocations. Source file "xxx"-
 Aborting... </span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1); background: rgba(255, 255, 0, 1)">三、</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:20:13.134+0800|SEVERE|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=23467;_ThreadName=Thread-2;|java.util.concurrent.TimeoutException:Timed out(5000 milliseconds) waiting for
 operation while connected to xxx:11211</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atnet.rubyeye.xmemcached.XMemcachedClient.latchWait(XMemcachedClient.java:2617)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atnet.rubyeye.xmemcached.XMemcachedClient.fetch0(XMemcachedClient.java:617)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atnet.rubyeye.xmemcached.XMemcachedClient.get0(XMemcachedClient.java:1030)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atnet.rubyeye.xmemcached.XMemcachedClient.gets(XMemcachedClient.java:1043)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atnet.rubyeye.xmemcached.XMemcachedClient.gets(XMemcachedClient.java:1065)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         at net.rubyeye.xmemcached.XMemcachedClient.gets(XMemcachedClient.java:1054)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atcom.haierpip.service.impl.MemcachedServiceImpl.gets(MemcachedServiceImpl.java:104)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atcom.haierpip.timer.UpdateImgQueueMapJob.updateList(UpdateImgQueueMapJob.java:41)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         at com.haierpip.timer.UpdateImgQueueMapJob.executeInternal(UpdateImgQueueMapJob.java:26)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         at sun.reflect.GeneratedMethodAccessor64.invoke(UnknownSource)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         at java.lang.reflect.Method.invoke(Method.java:597)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atorg.springframework.util.MethodInvoker.invoke(MethodInvoker.java:273)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atorg.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:311)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atorg.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:113)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         at org.quartz.core.JobRunShell.run(JobRunShell.java:202)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">         atorg.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525)</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">|#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1); background: rgba(255, 255, 0, 1)">四、</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:05:12.983+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=1595;_ThreadName=Thread-2;|2013-09-1618:05:12,983 INFO  Exception increateBlockOutputStream 10.255.254.6:50010
 java.net.ConnectException:Connection timed out </span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:05:12.983+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=1595;_ThreadName=Thread-2;|2013-09-1618:05:12,983 INFO  Abandoning blockblk_2971499765308711932_1671045</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:05:12.984+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=1595;_ThreadName=Thread-2;|2013-09-1618:05:12,984 INFO  Excluding datanode10.255.254.6:50010</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)"> </span></p>
<p><span style="color: rgba(255, 0, 0, 1); background: rgba(255, 255, 0, 1)">五、</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">2013-09-16 17:56:04,034WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Block report is due, andbeen waiting for it for 708 seconds...</span></p>
<p><span style="color: rgba(255, 0, 0, 1); background: rgba(255, 255, 0, 1)">六、</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">[#|2013-09-16T18:05:40.699+0800|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=1571;_ThreadName=Thread-2;|2013-09-16 18:05:40,699 INFO  Exception in createBlockOutputStream xxx:50010 java.io.IOException: Bad connect ack with firstBadLink as
 xxx.6:50010<br>
 |#]</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">七、</span><span style="color: rgba(255, 0, 0, 1)">hadoop</span><span style="color: rgba(255, 0, 0, 1)">的</span><span style="color: rgba(255, 0, 0, 1)">50070</span><span style="color: rgba(255, 0, 0, 1)">页面</span></p>
<p><span style="color: rgba(255, 0, 0, 1)">WARNING : There are about146 missing blocks. Please check the log or run fsck.</span></p>
 
                    
            
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