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ECharts data visualization project-large screen data visualization display

Course Intermediate 4722

Course Introduction：There are two main purposes for studying this course: 1. Visual panel layout adapts to the screen 2. Use ECharts to realize histogram display Core Technology: -Based on flexible.js + rem smart large screen adaptation - VScode cssrem plug-in - Flex layout - Less to use - Based on ECharts data visualization display - ECharts histogram data settings - ECharts map introduction

Highly available massive log collection system-Flume

Course Intermediate 6138

Course Introduction：Flume is a distributed, reliable system. It can efficiently collect and integrate data, and can also move large amounts of data from different sources to data centers for storage. Flume is a top-level project under Apache. Flume can not only collect and integrate log data, because the data source can be customized, Flume can be used to transmit large amounts of log data, which includes not only network transmission data, data generated by social media, email information, etc.

Self-study IT network Linux load balancing video tutorial

Course Intermediate 11388

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17699

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

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Custom pad extension with extension icon after title

I'm trying to create a mat accordion with a mat expanding panel inside a for loop. The problem is, I need to make some customizations, like adding a checkbox in front of each extension, and the extension icon should be placed after some specific text (in this case the book title). The alignment is confusing, from my understanding the expansion panel icon can be placed at the end or the beginning. I think pad extension is the right component to achieve the same goal. Need some guidance on how to implement pad extensions, or is there another approach I should consider?

2024-04-02 12:39:50

Centos system, lnmp environment, I compiled and installed the memcached extension. There is an extension under php -m, but there is no such extension in phpinfo?

Centos system, lnmp environment, I compiled and installed the memcached extension. There is an extension under php -m, but there is no such extension in phpinfo?

2017-05-24 11:30:32

Want to expand search input left

I tried to expand the search box to the left but somehow it takes up the width and expands to the right. I tried giving left margin but still doesn't work. Here it expands to the right, but I want it to expand to the left. I tried adding left padding but it gets affected inside the box instead of outside it. .search-click{border:1pxsolid#ccc;outline:none;background-size:22px;background-position:13px;border-radius:100px

2024-02-26 18:09:43

Extend PHP classes used internally without changing dependencies

I want to override a PHP class in Laravel, but it is being extended by several other classes that I don't want to bother with. The overall structure is as follows classAextendsR{}classBextendsR{}classCextendsR{}classDextendsR{}where A/B/C/D/R are all classes in the external package. I want to extend A/B/C/D to P without changing any of these files (which would be a maintenance burden) so that class P extends R. So I can make additions to class P. I've been working on class_a

2024-01-10 17:24:16

Automatically expand text area

I'm trying to make a simple auto-expanding text area. This is my code: textarea.onkeyup=function(){textarea.style.height=textarea.clientHeight+'px';} But the textarea grows infinitely as you type... I know there are Dojo and jQuery plugins It is possible to achieve this, but I don't want to use them. I looked at their implementation and originally used scrollHeight but did the same thing. You can start

2023-10-21 08:49:23

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Comparison of scalability and maintainability of golang framework

Course Introduction：Comparison of Go framework scalability and maintainability: GorillaMux: Limited scalability, difficult to maintain as the application grows. Echo: has good scalability, supports building modular applications, and is highly maintainable. Gin: Very good scalability, simple and elegant design, and excellent maintainability.

2024-06-01 comment 0 566

Analysis of scalability and reusability of Java closures

Course Introduction：Java closures are scalable and reusable. The scalability is reflected in: capturing variables outside the scope through closures and extending function functions (such as extending add() to increment()). Reusability is reflected in: custom predicates are used to filter lists (such as filter() and isEven) to achieve code reuse.

2024-05-02 comment 0 389

Performance and scalability considerations for Java frameworks

Course Introduction：When evaluating the performance and scalability of a Java framework, consider the following factors: Performance: Memory consumption: affects startup time and performance CPU usage: affects response time and throughput I/O performance: critical for data-intensive applications Scalability Scalability: Horizontal Scalability: Scale horizontally to meet the load Vertical Scalability: Scale vertically by adding resources Resilience: Automatic recovery and reconfiguration

2024-06-04 comment 0 1159

Is Extensibility with `eval()` Worth the Security Risks?

Course Introduction：The Perils of Eval: Why Extensibility Isn't Worth the RiskExtensibility is a desirable characteristic in programming, allowing classes to...

2024-12-29 comment 0 453

What are the advantages of Java frameworks in terms of scalability?

Course Introduction：The Java framework improves application resiliency through its scalability features, including: The resiliency framework provides features such as distributed caching, message queuing, and distributed task processing, allowing applications to scale based on load. Kubernetes uses the auto-scaling feature to enable applications to automatically expand based on load, improving scalability.

2024-06-02 comment 0 530

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