database-performance-debugging
Debug database performance issues through query analysis, index optimization, and execution plan review. Identify and fix slow queries.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill database-performance-debugging- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads database-performance-debugging automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Database Performance Debugging
Table of Contents
Overview
Database performance issues directly impact application responsiveness. Debugging focuses on identifying slow queries and optimizing execution plans.
When to Use
- Slow application response times
- High database CPU
- Slow queries identified
- Performance regression
- Under load stress
Quick Start
Minimal working example:
-- Enable slow query log (MySQL)
SET GLOBAL slow_query_log = 'ON';
SET GLOBAL long_query_time = 0.5;
-- View slow queries
SHOW GLOBAL STATUS LIKE 'Slow_queries';
SELECT * FROM mysql.slow_log;
-- PostgreSQL slow queries
CREATE EXTENSION pg_stat_statements;
SELECT mean_exec_time, calls, query
FROM pg_stat_statements
ORDER BY mean_exec_time DESC LIMIT 10;
-- SQL Server slow queries
SELECT TOP 10
execution_count,
total_elapsed_time,
statement_text
FROM sys.dm_exec_query_stats
ORDER BY total_elapsed_time DESC;
-- Query profiling
EXPLAIN ANALYZE
SELECT * FROM orders WHERE user_id = 123;
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Identify Slow Queries | Identify Slow Queries |
| Common Issues & Solutions | Common Issues & Solutions |
| Execution Plan Analysis | Execution Plan Analysis |
| Debugging Process | Debugging Process |
Best Practices
✅ DO
- Follow established patterns and conventions
- Write clean, maintainable code
- Add appropriate documentation
- Test thoroughly before deploying
❌ DON'T
- Skip testing or validation
- Ignore error handling
- Hard-code configuration values
FAQ
What does the database-performance-debugging skill do?
Debug database performance issues through query analysis, index optimization, and execution plan review. Identify and fix slow queries.
How do I install database-performance-debugging?
Run npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill database-performance-debugging in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/database-performance-debugging/ (personal) or .claude/skills/database-performance-debugging/ (project).
Which AI agents can use database-performance-debugging?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is database-performance-debugging safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains database-performance-debugging?
It is published by aj-geddes in aj-geddes/useful-ai-prompts. It has 493 recorded installs.
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