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  MongoDB fixed set (capped collection)

  One. What is a fixed set there is a special type of collection in MongoDB that deserves our special attention, and that is fixed set (capped collection). A fixed collection can declare the capacity size of a collection, which behaves like a circular queue

  2022-06-03 01:45:06 Views: 272
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  What is architecture?

  There are too many different opinions about the definition of architecture in the industry, but it is more or less the same, the essence is the same, but the emphasis is different. Here we choose the definition of IEEE (Institute of Electrical and Electronic Engineers): architecture describes the basic organizational structure of a system, including the components of the system, the relationship between components,

  2022-06-03 01:45:03 Views: 268
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  Theme and skin Development of IBM WebSphere Portal 6. 0

  Portal theme and skin Development to understand the theme of how to develop Portal, you must first understand the display process of IBM WebSphere Portal. IBM WebSphere Portal uses a different Java

  2022-06-03 01:44:52 Views: 271
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  Get the process number and assign a value to judge the process status

  First, pgrep is a tool to query the process through the name of the program, which is generally used to determine whether the program is running. In server configuration and management, this tool is often used, simple and straightforward. Usage: # pgrep [option] [Program name] pgrep [- flvx]

  2022-06-03 01:44:51 Views: 271
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  MessagePack Java 0.6.X serialization and deserialization of multiple types of variables (serializati

  The class Packer/Unpacker allows you to serialize and deserialize multiple types of variables, as shown in subsequent programs. This class enables serialization and deserialization of multiple types of variables and serialization of primary type variables as well as wrapper classes, String objects, byte [] objects

  2022-06-03 01:44:51 Views: 242
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  How to determine the thread pool size

  Background concurrent functions are more or less used in our daily business development process. So in the process of using the concurrency feature, you will definitely encounter the following question: how big is the concurrent thread pool? Programmers who are usually a little older may have heard of such a saying (where N stands for C.

  2022-06-03 01:44:42 Views: 288
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  TPA Test Project Management system-Test case Management

  Test Project Administrator (abbreviated as TPA) is a professional test project management tool independently developed by Jingwei Hengrun, which has been widely used in more than 20 domestic vehicle factories and parts suppliers. It can manage all data and texts during testing.

  2022-06-03 01:44:38 Views: 283
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  Summary of yarn knowledge system

  Monday, 2019-2-18 yarn knowledge system summarizes the causes of Yarn (1) in MapreduceV1, jobtracker has a bottleneck: all mr programs running on the cluster have jobtracker to schedule SPOF

  2022-06-03 01:44:31 Views: 297
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  The skills of dealing with big data by pandas

  Refer: https://yq.aliyun.com/articles/530060?spm=a2c4e.11153940.blogcont181452.16.413f2ef21NKngz#ht

  2022-06-03 01:44:26 Views: 209
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  Implementing Fibonacci with MIPS

  # # main:li $a2, 6li $A1, 1li $a3, 1li $a0, 1fib:add $S2, $A1, $a3

  2022-06-03 01:44:26 Views: 237
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  Yarn process, Yarn compared to MapReduce 1

  [TOC] the Yarn process can be understood by referring to the illustration and introduction in the authoritative Guide to Hadoop P79. Of course, it will be clearer and easier to understand by combining the following illustration with the explanation in it. Of course, the basic reference individual thinks that the illustration in the book should be more concise.

  2022-06-03 01:44:23 Views: 246
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  Distcp distributed copy

  (1) discp principle DistCp (Distributed Copy) is a high-performance copying tool used within or between large-scale clusters, which is consistent with the implementation of cp,scp on linux. The difference is that cp transfers the files and objects of the machine

  2022-06-03 01:44:02 Views: 239
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  Centos7 modifies yum source to Ali source (big data preparatory course 02q2)

  # # make sure you can access the Internet. I don't know how to check big data matriculation 0231 (1). Install wget software yum install-y wget installation completed and finally display Complete, indicating that the installation was successful (2). View the Yum source information:

  2022-06-03 01:44:02 Views: 249
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  WebRTC Development practice: how to implement SFU Server

  In the previous article, "WebRTC Development practice: why do you need a SFU Server?" We understood the basic principles and necessity of WebRTC SFU server and solved What and Why. This article is a further step to explore the implementation of SFU server.

  2022-06-03 01:43:47 Views: 266
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  0007-how to migrate Cloudera Manager nodes

  Warm Tip: to see the high-definition no-code picture, please open it with your mobile phone and click the picture to enlarge. 1. Overview this document describes how to migrate Cloudera Manager to a new CM node in a Kerberos environment. Through this document, you will learn the following knowledge: 1. Such as

  2022-06-03 01:43:37 Views: 221
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  What are big data's skills?

  What are big data's skills? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something. Big data's skills are as follows: first, the skills that big data needs to master in the basic stage of big data.

  2022-06-03 01:43:36 Views: 210
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  Talk about the garbage collector in the JAVA virtual machine

  The garbage collector of JAVA virtual machine is the scavenger of virtual machine memory, and its existence enables JAVA developers to devote more energy to business research and development. Understanding the garbage collector and making good use of this tool can better ensure the stability of the service. This article analyzes the memory of the JAVA virtual machine

  2022-06-03 01:43:36 Views: 243
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  What major is best to learn now?

  What major is the best to learn now? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way. IT major, now learning this area is still very popular, not only easy to find a job, but also a good working environment

  2022-06-03 01:43:36 Views: 247
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  The Richter substitution principle of the six principles of object-oriented

  This is my previous study note on the six principles of object-oriented, in which the understanding of the Richter substitution principle is not deep enough, https://blog.51cto.com/zhangzhao/2396810. According to Baidu encyclopedia, the Richter scale substitution principle is defined as:

  2022-06-03 01:43:36 Views: 209
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  What is PS value?

  What this article shares with you is about what PS value is. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article. Without saying much, let's take a look at it with the editor. PS value is a way of stock valuation, which is called market efficiency valuation method = general market.

  2022-06-03 01:43:35 Views: 285