Tag: java

The back-end

Spring Cloud builds microservices Architecture: Service fault Tolerance protection (Hystrix Service Degradation)

January 17, 2024

by Nigel Booth

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Spring Cloud B2B2C e-commerce social platform source code please add penguin beg: three five six two forty-seven fifty-nine. Before we start implementing circuit breakers using...

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The back-end

Maven configures checkStyle,SpotBugs, and Jacoco plugins

January 17, 2024

by John Davis

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$\quad$Configure the checkstyle. XML file and set which phase to bind to maven. The checkstyle.xml file will show you how to configure it. If necessary,...

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reading

I didn’t expect Hash collisions to work like this. Did you get them on your server?

January 17, 2024

by Patrick Wilson

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In fact, I have seen this problem before, just a few days ago, Professor Hong in a group shared a "some interesting attack method.pdf", I...

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The back-end

IDEA common shortcut keys & tips

January 17, 2024

by Ralph Ball

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The blog used for the weak chicken review consolidation, lay a solid foundation, but also hope that the big guy is generous to give advice....

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The back-end

Cheddar’s events

January 17, 2024

by Lavanya Khosla

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Cheddar defines the Event interface and AbstractEvent class, whose subclass needs to implement the Type method. EventHandler defines the Handle and getEventClass methods. The EventPublisher...

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The back-end

InheritableThreadLocal usage

January 17, 2024

by Simon Rose

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You can use ThreadLocal to pass values from one thread to another, but you can't use parent threads to pass values from one thread to...

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The back-end

Mybatis: How to implement SQL statement reuse function?

January 17, 2024

by 何宗翰

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In the work, there is often such a requirement, for the same SQL condition query, first need to count the number of records, to calculate...

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The back-end

8. SOFAJRaft source code Analysis – How to implement log replication pipeline mechanism?

January 17, 2024

by Mark Banks

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I was at a loss to say how it was done, so this time I'll take a look at how log replication is done in...

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The back-end

JVM Quick Tuning Manual V1.0 part ONE: Memory Structures (heap and Non-heap)

January 17, 2024

by 袁俊傑

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Also known as "permanent generation" or "non-heap", it is used to store information about classes loaded by the VIRTUAL machine, constants, static variables, and an...

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The back-end

These 11 Java development pits in 2020, can make me miserable!

January 17, 2024

by Prerak Agrawal

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Introduction We often encounter some unnoticed pit in the process of use, today we simply list some common problems in unpacking NPE as shown in...

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The back-end

Java14 release, 16 new features, more concise code

January 17, 2024

by Mary Johnston

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JDK14 will be officially released on March 17th, 2020/17. Please download it and experience it. It is said that this version is not a long-term...

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The back-end

JVM memory structure/runtime data area

January 17, 2024

by Lauren Johnson

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The JVM (Java Virtual Machine) is a Virtual host used to execute Java programs. The actual job of the JVM is to translate the compiled...

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The back-end

Why can’t you easily change the serialVersionUID field

January 17, 2024

by Kelly Watts-Jackson

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First of all, it's important to explain this rule. It's not that you can't change it, but that you can change it as you see...

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The back-end

【Java】Spring MVC Spring MyBatis integration

January 17, 2024

by Jocelyn Morris

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Personally, I prefer to write comments, and I think highly of the importance of comments in my work, so most of the text is in...

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The back-end

Packaging type VS basic type

January 17, 2024

by Craig Patchett

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Wrapper types and primitive types are familiar, but do you think about when to use wrapper types and when to use primitive types in your...

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The back-end

Offer in the bowl — ThreadLocal Interview Tips

January 17, 2024

by Melissa Mitchell

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Today we continue with the fifth installment of our Offer to Bowl series -- a question that prompts a series of reflections on ThreadLocal. Why...

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reading

Traction training what are the popular training courses

January 17, 2024

by Eva Barr

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In line with the development of the Internet era, with 15 years of history of IT education pulling force training, we solemnly launch three popular...

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The back-end

SLB instance clone

January 17, 2024

by Parinaaz Tailor

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Hi, everyone, 2018 Spring Festival just passed, I think we must feel short holiday, did not have fun, but we IT workers life is so...

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android

Move to Kotlin — classes and interfaces

January 17, 2024

by 張詩涵

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Just like In Java, Kotlin uses the class keyword to declare classes. If you just declare an empty class, Kotlin is no different from Java....

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The back-end

[Java] several typical memory overflow cases, all here!

January 17, 2024

by Mr. Matthew Thomas

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As a programmer, you will encounter some out-of-memory scenarios, if you haven't encountered them, you may have been working for a short time, or you...

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The back-end

Ten Methods of Hive Optimization

January 17, 2024

by Antonio Robertson PhD

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Hive is used well to mine more information from data. Those of you who have used Hive, I think, have had similar experiences: at the...

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reading

Java collection 1 – ArrayList

January 17, 2024

by Katherine Walton

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The data structures used by an ArrayList are arrays, which hold elements. Next, analyze it directly from the source code (JDK1.8). It implements the RandomAccess...

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The front end

Android automatic page speed measurement in meituan practice

January 17, 2024

by James Tucker

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With the rapid development of mobile Internet, mobile applications pay more and more attention to user experience. The technical team of Meituan also attaches great...

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android

First experience – Aliyun short video SDK For Android fast access

January 17, 2024

by 司懿

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Recently, some creative short video apps are popular among young groups, such as Douyin and MUSE, etc. Ali Cloud also timely launched a simple and...

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The back-end

A difficult memory leak search, BeanUtils pot

January 17, 2024

by Brittany Robinson

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Through jstat-gcutilpid5000, FGC is found to be frequent and frequent. At this time, the proportion of the old age is about 70%, and the memory...

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The back-end

Binary Search

January 17, 2024

by Wayne Goodwin

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Dsmudge Search (BINARY search), also called half-interval search, logarithmic search (binary chop), is a search algorithm that looks for a specific element in an ordered...

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The back-end

Jian refers to Java from the framework, win Spring source code

January 17, 2024

by Miss Chloe Perry

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Whether it is learning the source code of the Spring framework, or the framework design, the threshold of entry is too high to understand obscure....

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android

Kotlin’s Dirty Laundry: 1. Basics (2)

January 17, 2024

by Carol Baker

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Kotlin allows strings to contain embedded expressions beginning with "$". Obviously, using string templates can improve our development efficiency. This is a normal conditional statement....

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reading

This article gives you a thorough understanding of the core Java NIO components

January 17, 2024

by 張婷婷

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First of all, these concepts are very confusing, but they are covered in NIO, so to summarize. Synchronization: When the API call returns, the caller...

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reading

Elasticsearch (3)– Distributed cluster

January 17, 2024

by Jackson Thomas

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Elasticsearch is used to build highly available and scalable systems. Scaling can be done by purchasing better servers (vertical scale or scaling up) or by...

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