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jps (JVM Process Status Tool): displays all HotSpot virtual machine processes in the specified system jstat (JVM Statistics Monitoring Tool): users collect all aspects of the operation data of the HotSpot virtual machine jinfo (Configuration Info for Java): view and adjust parameters of virtual machine in real time, and integrate into jhsdb ...

ScheduleAlgorithm is an interface responsible for selecting a suitable node for pod. This section mainly analyzes how to implement an extensible and configurable general algorithm framework to achieve general scheduling, how to uniformly register and build algorithms, how to transfer metadata and scheduling process context data 1. Design consid ...

  Note: Although the method area is discussed in this article, knowledge about Class file structure and Class loading is also involved in order to answer some questions. java7 and before, method area implementations were permanent, and after java8, method area implementations were Metaspace 5.1 D ...

I learned a little bit about ByteBuddy today. Its official warehouse address is: https://github.com/raphw/byte-buddy. Official description: Runtime code generation for the Java virtual machine.   Anyone who has written Java knows that Java only supports interface based dynamic proxies. If your class does not implement an interface, and yo ...

11.1 mapping map operation of set elements 11.1.1 look at a real demand Requirement: Please * 2 all elements in List(3,5,7), and return the result in a new collection, that is, return a new List(6,10,14). Please write a program to implement it 11.1.2 using traditional methods to solve //Traditional wri ...

Introduction to Netty Netty introduction Netty is a widely used Java network programming framework. Characteristics of Netty technology and method Design Unified interface for multiple transport types - blocking and non blocking Simple but more powerful threading model True connectionless datagram socket support Link logic supports reuse Ea ...

A regular expression is a string with a specific pattern to match text Preg match $pattern = '/php/'; $subject = "php It's the best programming language, php No one!"; $result = preg_match($pattern,$subject); if($result){ echo "<h1>Matching success</h1>"; }else{ echo "<h1>Match unsuccessful</h1>"; } Preg? Mat ...

SchedulerCache is the core data structure responsible for local data caching in kubernetes scheduler. It implements the Cache interface, which stores the data obtained from apiserver, provides the Scheduler with the information of node, and then the final node node node of pod is decided by the scheduling algorithm. The Snapshot and node scatte ...

Article directory The first way: window.alert The second way: the way of script block The third way: js script file, src = path Introduction to JavaScript: 1. Functions to be realized: Users click the following button to pop up a message box. JS is a dynamic and interactive browser.2.JS is an even ...

datawhale algorithm and data structure (above) day4-queue Theoretical part 1. Queues Definition Instead of a stack, a queue is a linear first-in-first-out (FIFO).Insertions are allowed only at one end of the table and deletions of elements at the other end.In a queue, the end that allows insertio ...