Implementation of paging in JavaWeb - based on Mysql (general)

I believe you can also see the paging effect on the website! So now let's take a look at his ideas, codes and renderings.General pagination based on MySql database The core idea of ​​general paging: send the last query request again, but the page number has changed Implementation steps: 1) Query all data first Junit test     baseDao&l ...

Posted by apoc- on Tue, 22 Nov 2022 20:07:21 +0300

Nginx gray release ---- [cookie], [IP]

Grayscale publishing refers to a publishing method that can smoothly transition between black and white. AB test is a grayscale release method, allowing some users to continue to use A and some users to start using B. If users have no objection to B, then gradually expand the scope and migrate all users to B.Grayscale publishing can ensure the ...

Posted by codeDV on Mon, 21 Nov 2022 16:17:25 +0300

The use and source code analysis of microservice gateway current limiting middleware gateway integration and standard library rate limiting device

Microservice gateway (8) Current limiting middleware gateway integration and use of time/rate rate limiter and source code analysis Current limiting principle The meaning of current limit Three powerful tools for high concurrency systems: cache ​ Improve system access speed and increase processing capacity, and increase cache for correspon ...

Posted by firedrop on Thu, 20 Oct 2022 18:59:35 +0300

Linux -- configure the Rewrite Module of nginx to realize the automatic jump of old and new domain names (Web server cluster, rewrite instance configuration of various nginx, rewrite syntax and detailed explanation of location)

preface It consists of kernel and Nginx module. Nginx itself does little work. When it receives an HTTP request, it just maps the request to a location block by looking up the configuration file, and each instruction configured in the location will start different modules to complete the work. Therefore, the module can be regarded as the real ...

Posted by locell on Tue, 24 May 2022 05:11:51 +0300

Use of urllib Library of reptiles

urllib Library preface In the actual operation of the crawler, we only need two lines of code to get the web content. This function is the implementation of the third-party library In Python 2, our library has urllib 2 and urllib, but in Python 3, we directly merged this library into urllib, which is why we can't afford to install it when we in ...

Posted by ReDucTor on Mon, 23 May 2022 11:16:21 +0300

Development of private stack protocol for high performance Netty

preface This article continues with the development knowledge of Netty's private stack protocol. The order of this article is: What is a private stack protocol? What should a private stack do? General communication model of private stack Data transfer format of private stack What is a private protocol stack? In terms of communication pr ...

Posted by chwebdesigns on Wed, 18 May 2022 05:57:51 +0300

JWT learning notes -- springboot integrated JWT usage

In the last note, I completed the interface test of verifying the token, which can use the method of checking the token every time to protect the interface in the project. Question: Another problem arises. Suppose there are 10 interfaces that should be protected. In addition to their own parameters, these 10 interfaces also need to transmit t ...

Posted by thedon on Mon, 09 May 2022 09:39:05 +0300

Urlib2 Library - Introduction to Python crawler Foundation Series (12)

Tip: there are benefits at the end of the article! Latest Python crawler materials / Study Guide > > Poke me directly preface Urlib2 Library Urlib2 is python2 7 comes with a module (no need to download), which supports a variety of network protocols, such as FTP, HTTP, HTTPS, etc Urlib2 in Python 3 Changed to urllib in X request ...

Posted by jagguy on Wed, 04 May 2022 11:44:28 +0300

Downtime caused by RestTemplate timeout configuration has been nagging managers for a year

Presumably, many data centers will integrate the data of many systems and then conduct unified planning and processing. The implementation of some business scenarios must rely on the third-party system. In a business scenario, when users are online, they need to request the third-party interface to obtain relevant information in real time, whic ...

Posted by aruns on Sun, 01 May 2022 07:51:35 +0300

Spring HTTP Invoker remote proxy details and examples

1. Concept Spring HTTP Invoker is a JAVA remote method invocation framework implementation. The principle is basically the same as that of JDK's RMI, so let's make a simple comparison with other JAVA remote method invocation implementations. RMI: Use JRMP protocol (based on TCP/IP), do not allow penetrating firewall, use JAVA serialization m ...

Posted by scottb1 on Wed, 27 Apr 2022 20:55:27 +0300