A public account focused on workplace, career growth, team management, and self-improvement. The author is the writer of books including 'SpringBoot Technology Insider' and 'Drools 8 Rule Engine: Core Technology and Practice'.
The article explains that after installing Claude Code, the most important action is to create a CLAUDE.md file that defines a contract of constraints for the AI, detailing its structure, best‑practice writing tips, and practical examples for global, project, and local scopes.
This guide walks you through installing Claude Code on macOS, configuring it with the CC Switch tool to use domestic AI models, and demonstrates a simple "Hello, Claude Code!" HTML generation example, covering all required commands, settings, and troubleshooting steps.
This article examines OpenClaw’s architecture, its integration of chat entry, agent orchestration, sandbox execution, and extensible skill packs, while highlighting practical limitations such as high token consumption, error amplification, limited professional capabilities, and security concerns that temper its real‑world impact.
This article explains how Mermaid's text‑based diagram syntax can be combined with AI to quickly generate flowcharts, sequence diagrams, class diagrams, and even pie charts, highlighting its advantages such as version control, easy modification, automatic layout, and seamless Markdown integration.
This article explains why MySQL partitions based on a timestamp column still function correctly even when the application does not explicitly set the column, by detailing the default CURRENT_TIMESTAMP behavior, partition key evaluation, and practical examples with table definitions and insert statements.
This article explains MySQL's supported character sets and collations, shows how to list them, demonstrates table‑level and column‑level definitions, clarifies naming conventions, and provides practical examples for verifying and altering collations to ensure correct string comparison and storage.
UUIDs provide globally unique identifiers useful in distributed systems, but using them as MySQL primary keys can degrade insert speed, increase storage, and cause page splits; this article explains UUID versions, their structures, performance impacts, and best‑practice techniques such as binary storage, ordered UUIDs, and alternative ID schemes.
This article explains MySQL's transaction isolation levels, the ACID principles behind them, common anomalies like dirty reads, non‑repeatable reads and phantom reads, the locking mechanisms that enforce isolation, and how to configure the desired level in practice.
This article explains what database transactions are, why they matter, details MySQL’s transaction commands, the ACID properties, isolation levels, lock types, MVCC, how to use InnoDB, handle errors, employ savepoints, and provides concrete SQL examples for creating, committing, rolling back, and managing transactions.
This article explains the concepts, differences, advantages, and disadvantages of database sharding and partitioning, provides practical MySQL examples for horizontal sharding by region and range partitioning, and offers guidance on choosing the right approach for scalability and maintainability.
