Building Production ML Systems: MLOps Best Practices
Introduction
Machine learning in production is vastly different from notebooks …
AI & Machine Learning
View All →Fine-tuning Large Language Models: Cost-Effective Training
Introduction
Fine-tuning large language models on custom data can be …
LLM Fine-tuning vs Prompt Engineering: Cost-Benefit Analysis
Introduction
When building production LLM applications, developers face a …
Vector Databases: Pinecone vs Milvus vs Weaviate
Introduction
Vector databases are the backbone of modern AI applications. They …
Programming
View All →Building Web Services in Rust: Axum Complete Guide
Introduction
Rust is increasingly becoming the language of choice for building …
Rust Memory Safety: Ownership Deep Dive for C++ Developers
Introduction
Rust’s ownership system is what makes it possible to …
High-Performance Networking: Tokio Runtime Explained
Introduction
Tokio is Rust’s de facto standard async runtime, enabling …
Unsafe Rust: When & How to Use It Correctly
Introduction
Unsafe Rust allows you to disable certain safety checks when …
DevOps & Infrastructure
View All →AWS Cost Optimization: Reserved Instances vs Savings Plans
Introduction
AWS cost optimization is one of the most underutilized ways to …
Serverless Cost Traps: Lambda, DynamoDB Bill Reduction
Introduction
Serverless is marketed as “pay-per-execution,” but many …
Container Cost Analysis: Docker, Kubernetes Economics
Introduction
Containerization (Docker) and orchestration (Kubernetes) are …
Spot Instances: Fault-Tolerant, 80% Cheaper Architecture
Introduction
Spot Instances are AWS’s ultra-discounted compute offering: …
Data Engineering
View All →Privacy-Preserving Machine Learning: Techniques and Implementation
Introduction
Privacy concerns in machine learning have become paramount as …
Data Science Career Guide: From Beginner to Professional
Introduction
Data science remains one of the most in-demand careers in tech. …
Introduction to Natural Language Processing
Introduction
Natural Language Processing (NLP) enables computers to understand, …
Introduction to Time Series Analysis
Introduction
Time series data is everywhere—from stock prices to sensor readings …
Security
View All →Cloud Security: AWS, Azure, and GCP Best Practices
Cloud Security: AWS, Azure, and GCP Best Practices
Cloud security requires …
Zero Trust Architecture: Implementation Guide
Zero Trust Architecture: Implementation Guide
Zero Trust replaces implicit trust …
API Security Beyond JWT: OAuth2, Rate Limiting, and Prevention
API Security Beyond JWT: OAuth2, Rate Limiting, and Prevention
JWT is only one …
Secrets Management and Rotation: Vault, AWS Secrets Manager, Azure Key Vault
Secrets Management and Rotation: Vault, AWS Secrets Manager, Azure Key Vault …
Cloud
View All →Edge Computing with Cloudflare Workers: Complete Guide 2026
Introduction
The future of computing is distributed, and edge computing has …
Multi-Cloud Strategy: Managing Workloads Across Cloud Providers 2026
Introduction
The cloud computing landscape has evolved dramatically. …
API Gateway and Management: Design, Security, and Best Practices
Introduction
APIs are the backbone of modern applications, enabling …
Cloud Compute Optimization: Instance Selection, Scaling, and Performance
Introduction
Compute resources represent a significant portion of cloud spending …
Backend
View All →Building Real-Time Applications with WebSockets
Introduction
WebSockets enable bi-directional, real-time communication between …
Building RESTful APIs with Node.js
Introduction
Node.js is ideal for building RESTful APIs. Its event-driven, …
API Design Trends 2026 Complete Guide: REST, GraphQL, gRPC, and Webhooks
Introduction
APIs are the connective tissue of modern software. From mobile apps …
Building AI APIs Complete Guide: Production-Ready AI Services
Introduction
Building an AI API is different from traditional APIs. You deal …
Mobile
View All →Mobile AI and On-Device Machine Learning 2026
Introduction
The era of cloud-dependent mobile AI is ending. Modern smartphones …
Mobile App Performance Optimization: 2026 Best Practices
Introduction
Users expect mobile apps to be instant, smooth, and efficient. In …
Mobile App Privacy and Data Security 2026
Introduction
Mobile app privacy and security have become critical concerns in …
Mobile App Development: iOS vs Android vs Cross-Platform 2026
Introduction
Mobile development offers multiple paths: native iOS, native …
Network
View All →OCSP Protocol: Complete Certificate Status Checking Guide for 2026
Introduction
Certificate revocation is a critical component of PKI security. …
SPF DKIM DMARC: Complete Email Authentication Guide for 2026
Introduction
Email remains one of the most critical communication channels for …
AMQP Protocol: Enterprise Message Queuing 2026
Introduction
AMQP (Advanced Message Queuing Protocol) is an open-standard …
API Gateway Patterns 2026: Architecture, Features, and Implementation
Introduction
API gateways have become the cornerstone of modern microservices …
Latest Articles
Thinking About Docker 1
原来的服务的是怎样部署的？
1. 通过二进制安装
典型的有C/C++的程序，一般官网会提供编译好的安装包，例如MySQL，下载后直接配置使用即可。 这样的方式感觉还不错，把数据和程序都整理在一个目录里，扩容的时候直接拷贝即可，这样部署也是 单实例的。
2. 通过包管理工具安装
例如yum，使用官方源 …
Loops and Iteration in Ruby: A Complete Guide
Introduction
Ruby offers a rich set of iteration methods that go far beyond traditional for loops. Most Ruby developers prefer iterator methods over …
public, private, and protected Methods in Ruby
Introduction
Ruby provides three levels of method visibility: public, private, and protected. These control who can call a method and from where. …
How keepalive_timeout directive works in Nginx?
实验观察Nginx中keepalive_timeout参数的具体作用
Computer System Hierarchy: From Hardware to Software
The computer system can be abstracted into multiple hierarchical layers, each building upon the previous one. This abstraction is fundamental to …
Linux Kernel Upgrade
实验题目
升级linux系统的内核之centos。
实验描述
在centos6.5 final上, 内核版本为2.6.32, 内核版本使用uname命令查看
uname -r
要升级到的内核版本为2.6.38.6
环境准备
- centos 6.5 Final系统
- 安装编译环境
yum …构建自己的Linux内核模块
构建一个简单的Linux内核模块
我们要构建一个简单的内核模块，假设名字为simplemodule。
File: Makefile
obj-m := simplemodule.o
File: simplemodule.c
#include <linux/init.h>
#include …磁盘IO操作指令和普通表达式指令所消耗的时间对比
以下是一个例子，调用fprintf函数会产生一次磁盘IO操作，如果只调用i++则只是寄存器内表达式的运算。
# disk io VS statements
#include <stdlib.h>
#include <stdio.h>
#include …Linux LVM (Logical Volume Manager): Complete Guide
Introduction
The Linux Logical Volume Manager (LVM) is a powerful storage management system that provides a higher-level abstraction over physical …
JavaScript中的变量与常量及其作用域
let定义的变量
ES6中的let使得变量一定程度上具有块级作用域特性。但并非完全支持块级作用域。
当一个函数的变量传入函数内部时，内部的回调函数还不能直接访问到该变量，需要在内部在建立一个临时变量进行传递。
updateLocalCart(cartId, amount) {
let id = …