Course Introduction：要实现可靠的Go服务重试机制，应使用带抖动的指数退避，先明确答案：1.采用指数退避加随机抖动避免请求洪峰；2.封装可复用的重试函数并支持上下文控制；3.设置最大重试次数与退避上限；4.优先使用成熟库如cenkalti/backoff/v4；5.避免对404等永久错误重试并记录重试日志。 A complete implementation requires these core steps to improve system flexibility.

2025-08-07 comment 0  815

Course Introduction：In front-end development, when using jQuery's load() method to load HTML content asynchronously, if you try to manipulate these newly loaded DOM elements through JavaScript immediately, you may encounter the error of document.getElementById(...) is null.这是因为JavaScript在内容完全加载并添加到DOM之前就已经执行了。本文将详细讲解此问题的原因，并提供使用load()方法的回调函数来确保内容加载完成后再进行DOM操作的解决方案。

2025-08-15 comment 0  454

Course Introduction：Sorting String Numbers NumericallyWhen dealing with a list of strings that represent numerical values, sorting them based on their actual数値...

2024-12-08 comment 0  290

Course Introduction：Pretty-Print NumPy Arrays with Precision and Suppression of Scientific NotationWhen working with NumPy arrays of浮点数s, it's common to...

2024-12-08 comment 0  759

Course Introduction：Rounding to at Most 2 Decimal Places, Only When NecessaryWhen working with数値, it's often necessary to round them to a specific number of...

2024-12-29 comment 0  374

Course Elementary  13941

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82507

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13285

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24766

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27582

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.