Go
Stop Parsing os.Args by Hand: A Practical Guide to Cobra in Go
Learn how Cobra turns a growing Go CLI into a clear command tree, with subcommands, flags, validation, help text, and maintainable error handling.
Stack InsideFeatured · Go
Stop Parsing os.Args by Hand: A Practical Guide to Cobra in Go
Learn how Cobra turns a growing Go CLI into a clear command tree, with subcommands, flags, validation, help text, and maintainable error handling.
All articles
Backend · Java
Spring Boot Internationalization, End to End
Build a Spring Boot application with Chinese, English, and Japanese support, from message bundles and configuration through service and page integration.
Backend · Alipay
Integrating Alipay as a Service Provider
A practical walkthrough of Alipay's service-provider model, covering application setup, merchant onboarding, and the core payment flow.
Backend · Python
Practical Python Type Hints: TypeVar, Protocol, and TypedDict
Use Python's advanced typing tools to make flexible APIs easier to understand and catch mistakes before they reach production.
Backend
How MySQL Indexes Really Work: Prefixes, Ranges, and EXPLAIN
A hands-on look at composite indexes, range predicates, table lookups, and the execution plans that explain why a query is fast or slow.
Databases
When a LEFT JOIN Loses Rows: A KES Migration Postmortem
A reconciliation incident exposed a subtle outer-join behavior during a KES migration. This article traces the plan, the cause, and the fix.
Node.js
A Practical Guide to Node.js path: Nine APIs You Will Use
Understand path.join, path.resolve, and the other core path APIs that make file-system code portable and predictable.
MySQL
Recovering MySQL After a Server Failure with Reliable Backups
Build a production-minded MySQL backup routine with mysqldump, scheduled jobs, disk-space checks, and recovery verification.
Rust
From C to Rust: Understanding Clone and Deep Copies
Compare C's copy conventions with Rust's Clone trait and see how Rust makes copying behavior explicit in the type system.
Backend · AI
Getting Started with Spring AI in Java
Build a Java-based AI application with Spring AI, including model calls, function calling, and a practical introduction to RAG.
