Memcached principle and deployment

Memcached overview An open source high performance distributed memory object caching systemAll data is stored in memorySupport data of any storage typeSpeed up website access Memcached routing algorithm ● residual hash algorithmFirst, use key to do hash operation to get an integer, then do hash algorithm, and route according to the remainde ...

Posted on Thu, 26 Dec 2019 02:32:32 -0500 by lucidpc

Create, run and deploy Spring microservices in five minutes

Through the java learning and sharing in the course of excellence, we can see some relevant information about creating, running and deploying Spring microservices in five minutes, code a lot of knowledge points, and organize them for reference and learning. We have a deeper understanding of microservice architecture, and the architecture mind ...

Posted on Thu, 26 Dec 2019 02:31:07 -0500 by sws

Getting started with java Concurrent Programming

1. Introduction 1.1. Two ways to implement threads package chapter2; /** * @author calebzhao<9 3 9 3 4 7 5 0 7 @ qq.com> * 2019/6/29 14:05 */ public class MyThreadDemo1 { public static void main(String[] args) { new Thread1().start(); new Thread(new Thread2()).start(); } } class Thread1 extend ...

Posted on Thu, 26 Dec 2019 00:54:47 -0500 by besbajah

Guide to Key Technologies for Go Development | Go Failure-Oriented Programming (with super-full knowledge maps)

Author | Yang Jiang (Forget Hedge) Alibaba Senior Technical Expert Focus on the public number Alibaba Cloud Native, reply to Go to see a clear picture of knowledge! Guidance: Start from the problem itself, not limited to the Go language, discuss the problems often encountered on the server, and finally go back to how to solve these problems, t ...

Posted on Wed, 25 Dec 2019 22:53:47 -0500 by milind24

Python operates on MongoDb databases

1. Introduction MongoDB is a document database based on distributed file storage. It can be said that it is a non-relational (NoSQL, Not Only SQL) database which is more like a relational database. It has the characteristics of free, simple operation, document-oriented, automatic fragmentation, scalability and powerful query function. It suppo ...

Posted on Wed, 25 Dec 2019 21:43:52 -0500 by Stingus

Summary of Java JDBC database links

Summary of Java JDBC database links First, To link a database Two. On the difference between Statement and PrepareStatement Three. A summary of ResultSet Four. Encapsulation of custom tool class Five. Some unusual explanations   1, To link a database Registration driver Get linked objects Create sql container Execute sql statement Query opera ...

Posted on Wed, 25 Dec 2019 15:01:59 -0500 by ozman26

mysql database and data table operation

Preface In the development process, you often have to deal with mysql, so you often need to use some operation statements, This paper combs mysql to create database, create table, modify table, delete table, data query, insert, modify, delete and a series of operation statements. 1. Database connection mysql -u root -p Connect to the de ...

Posted on Wed, 25 Dec 2019 10:47:39 -0500 by Ulysses Freeman

Eclipse connecting MySql database, two problems solving

After installing MySQL and Eclipse correctly, try to connect to the database with the code on the network The network code is as follows: import java.sql.*; public class TestJDBC { public static void main(String args[]) { try { Class.forName("com.mysql.jdbc.Driver"); //Load MYSQL JDBC Driver //Cla ...

Posted on Wed, 25 Dec 2019 09:55:35 -0500 by smokinjoe

Qt Write 19-Log Query for Security Video Monitoring System

1. Preface Log query function is the basic function, which is divided into two main parts, one is local log query, including running log, alarm log, operation log; the other is device log query, which is to pull out the log information of NVR device through SDK, including system operation, configuration operation, alarm operation, video operati ...

Posted on Tue, 24 Dec 2019 21:28:10 -0500 by salman_ahad@yahoo.com

python exception thrown

In the process of code writing, in order to create a program with clear structure, the consciousness of code level separation is very important. At this point, it involves the problem of exception handling in different layers. For example, now my code has designed three layers: db operation bottom layer, orm layer, control layer, and db operat ...

Posted on Tue, 24 Dec 2019 14:48:08 -0500 by ColdFusion