Spring boot + neo4j ☞ create a multi-point network

Based on the simple practice of the first two articles, we will continue to talk about the application of Neo4j, simulating the relationship between employees in the company. Of course, the relationship may be the superior and subordinate (Management), the same level (colleagues), or even some other special relationships, such as, like each oth ...

Posted on Tue, 05 May 2020 02:52:21 -0400 by JimBadger

MySQL 5.6 upgrade 5.7 steps

Upgrade steps: 1. Full database backup for mysql5.6 (*****) for failback 2. Close MySQL 5.6 database 3. Deploy mysql5.7 software 4. Modify configuration information 5. Modify startup script 6. Start mysql5.7 database 7. MySQL upgrade database related parameters 8. Restart the database and test the upgrade results First, the database is ...

Posted on Tue, 05 May 2020 00:59:18 -0400 by danscreations

Data structure and algorithm series XIX (binary search 2)

1. Introduction 1.1. Why study data structure and algorithm? Some people say that data structure and algorithm, computer network, and operating system are the same, away from daily development, except for the interview may not be used in this life! Some people say that I do business development. As long as I am proficient in API, framework ...

Posted on Tue, 05 May 2020 00:51:10 -0400 by bobob

The Linux server uses the tc command to limit the up and down traffic of the network card

1, Install wondershaper software Since this software is only available in the CentOS7 third-party library, install the third-party library first yum install epel-release -y yum install wondershaper -y Limit the uplink bandwidth to 1M and the downlink bandwidth to 10M wondershaper eth0 1024 10240 Clear the original rule (two para ...

Posted on Tue, 05 May 2020 00:05:45 -0400 by fluxem

Java learning notes 40 (buffer stream)

Buffer stream: Among the various streams of reading and writing files, the most troubling is efficiency, The purpose of buffer stream is to improve the efficiency of reading and writing   Byte output buffer stream: package demo; import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.io.IOException; //Improve write ...

Posted on Mon, 04 May 2020 18:55:26 -0400 by drdapoo

One of the three stages: Architecture introduction and environment deployment

1, Architecture introduction and environment deployment (1) Understand the composition of cluster architecture servers Basic architecture composition: (for user access) 1. Front end services: 1) Customer user Is a visitor who requests to visit the website page 2) Security - firewall equipment Policy control shall be carried out for users access ...

Posted on Mon, 04 May 2020 15:55:33 -0400 by atrum

Socket implementation of asynchronous TCPserver

Author: Xiaozhu zz address http://blog.csdn.net/zhujunxxxxx/article/details/44258719 Reprint please indicate the source Socket asynchronous TCPserver I believe that people who have been engaged in network programming are not unfamiliar with TCP at all. In C, Microsoft has helped us encapsulate two classes: TcpListener and tcpcclient. The Socke ...

Posted on Mon, 04 May 2020 11:40:50 -0400 by nosmasu

DOM parsing XMl documents

1, Writing xml files Put the written XML document on the desktop – > the double of Documents Verify that the XML document is written correctly on the network at: http://127.0.0.1/ Document name 2, Create a class inherited from NSObject, for example: the class name is Luck Define the attribute in the Lu ...

Posted on Mon, 04 May 2020 07:27:34 -0400 by Stevis2002

NS2 network simulation process

The process of NS2 network simulation can be summarized as follows:1. InitializationCreate ns simulatorCreate. tr file (record simulation results)Create. nam file (record simulation process)Set end functionSet parameters required in simulation2. Create simulation topologyCreate nodeCreate and set up linksSet the arrangement of links in nam3. Cr ...

Posted on Mon, 04 May 2020 06:06:26 -0400 by BoukeBuffel

Distributed task? Master / task? Worker

17:08:0317:08:04 In Thread and Process, Process should be preferred, because Process is more stable, and Process can be distributed to multiple machines, while Thread can only be distributed to multiple CPU s of the same machine at most. Python's multiprocessing module supports not only multiprocessing, but also the managers sub module to dist ...

Posted on Mon, 04 May 2020 03:56:45 -0400 by forums