Course Introduction：Traditional IO is suitable for simple file reading and writing, while NIO is suitable for concurrent and non-blocking scenarios. 1. Traditional IO is blocking stream operation, suitable for small amounts of connections and sequential processing; 2. NIO is based on channels and buffers, supports non-blocking and multiplexing, suitable for high concurrency and random access; 3. NIO can memory map files, improving the processing efficiency of large files; 4. Traditional IO API is simple and easy to use, strong compatibility, and high NIO learning and debugging costs; 5. Choose according to performance requirements, if there is no bottleneck, there is no need to force replacement.

2025-07-13 comment 0  886

Course Introduction：When encountering a disk IO bottleneck, you should first confirm the root cause of the problem and then optimize it. 1. Use iostat, iotop and other tools to confirm whether there are IO bottlenecks, pay attention to %util and await indicators; 2. Analyze application behavior, reduce small files reading and writing, enable file system cache, and optimize log writing methods; 3. Select a suitable file system such as ext4 or XFS to improve IO efficiency; 4. Adjust the IO scheduling strategy, choose noop or deadline in SSD, and use CFQ in mechanical hard disks; 5. Use cache (such as Redis) and asynchronous IO mechanism to reduce disk pressure.

2025-09-17 comment 0  636

Course Introduction：Understanding Golang's io/ioutil NopCloser FunctionIn Golang's io interface, there's a unique function called NopCloser. It's designed to provide...

2024-11-16 comment 0  906

Course Introduction：Understanding Go's io/ioutil NopCloserThe io/ioutil package in Go provides a range of functions for working with I/O operations. One of these...

2024-11-11 comment 0  1375

Course Introduction：Understanding Go's io/ioutil NopCloserThe io/ioutil package provides utility functions for working with input and output in Go. One of the...

2024-11-23 comment 0  753

Course Elementary  13956

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  82524

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  13294

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  24774

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  27601

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.