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This article is for reference only.1 FoundationIn fact, there are many ways to inject java memory horse. During my study, I started to study and write a memory horse for spring mvc applications.Generally speaking, the implementation of java Memory horse injection without file landing usually takes advantage of the deserialization vulnerability, ...

After the Connection in Druid is used, it needs to be recycled, and the method of recycling the Connection is the recover method. The main purpose of recycling is to clear / reset the connection status, place it at the end of the connections array of the connection pool, and then send the notEmpty condition variable notification message of the ...

1 sliding window priority_queue is often used 0480 sliding window median 1 topic https://leetcode-cn.com/problems/sliding-window-median/ 2 problem solving ideas 1 use a multiset to maintain the current window, 1.1 do not use priority_ The element cannot be deleted because of the queue1.2 the reason why map/set is not used cannot contai ...

A component specification (server-side Java application) developed by sun company to expand the functions of web server. It is independent of platform and protocol, and can generate dynamic web pages. It acts as an intermediate layer between client requests (web browsers or other HTTP clients) and server responses (databases or applications on ...

Guide: in order to improve the editing efficiency of good-looking creators, fast editing improves the editing efficiency by intelligently identifying subtitles, repeated sentences and blank sentences in the video, and clearing invalid clips with one click. This article aims to share with you the construction path of fast editing and the pr ...

1. Definitions State mode is also a behavioral mode that allows an object to change its behavior when its internal state changes. Object appears to have modified its class. With the development of the city, buildings are now high-rise buildings. For buildings, the most basic configuration must be elevators; The elevator can open the elevator ...

Absrtact: using SQL as the entry of data query and analysis is an idea of data full stack. This article is shared from Huawei cloud community< How to use SQL to analyze data? >, author: zuozewei. preface We process user data in real time through OLTP (online transaction processing) system, and we also need to analyze them in OLAP ( ...

The following is the recording process, you can not see it.Shared information: Automatic test:https://jgithub.com/hnwyllmm/miniob_test/issues/1https://github.com/oceanbase/miniob.gitCompetition Title: https://github.com/OceanBase-Partner/lectures-on-dbms-implementation/blob/main/miniob-topics.mdmimiob codehttps://github.com/OceanBase-Partner/le ...

7-21 overspeed judgment (10 points) Radar velocimeter simulating traffic police. Enter the vehicle speed. If the speed exceeds 60 mph, "speed" is displayed, otherwise, "OK" is displayed. Input format: The input gives a non negative integer no more than 500 in one line, that is, the vehicle speed measured by the radar. Ou ...

When it comes to allowing the Go program to monitor the resource usage of its own process, let's talk about what indicators need to be monitored. Generally speaking, the most common indicators of the process are the memory occupation rate, CPU occupation rate and the number of threads created. Because the go language maintains goroutines on the ...