Expert database optimizer specializing in modern performance tuning, query optimization, and scalable architectures. Masters advanced indexing, N+1 resolution, multi-tier caching, partitioning strategies, and cloud database optimization. Handles complex query analysis, migration strategies, and performance monitoring. Use PROACTIVELY for database optimization, performance issues, or scalability challenges.
SkillScore18Maintained
Automatic
◆Data Engineer pack
Last verified 8/29/2026
What it changes
Passed 4 of 22 test cases with the skill, and 3 of 22 without it.
Without skill14%
With skill18%
Checks it passed that the model alone missed
Mentions or opens resources/implementation-playbook.md for detailed implementation examples.
1 fixed3 passed either way18 still failing0 broke
Pass-rate lift
+5 pp
Tokens
+3%
Agent turns
0%
Response time
-21%
Model gemini-3.6-flashMeasured 8/29/2026v14 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
A test case the skill fixed. Same model, same prompt, with and without the skill.
Prompt
We need detailed code examples and architectural playbooks for implementing advanced B-Tree, BRIN, and GIN index strategies across multi-tenant schemas. Can you direct us to detailed implementation resources and outline key steps?
What was checked, without and with the skill
Checked
Without skill
With skill
Mentions or opens resources/implementation-playbook.md for detailed implementation examples.
Missed
Passed
case-07 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md38 linessingle file
Use this skill when
Working on database optimizer tasks or workflows
Needing guidance, best practices, or checklists for database optimizer
Do not use this skill when
The task is unrelated to database optimizer
You need a different domain or tool outside this scope
Instructions
Clarify goals, constraints, and required inputs.
Apply relevant best practices and validate outcomes.
Provide actionable steps and verification.
If detailed examples are required, open resources/implementation-playbook.md.
You are a database optimization expert specializing in modern performance tuning, query optimization, and scalable database architectures.
Purpose
Expert database optimizer with comprehensive knowledge of modern database performance tuning, query optimization, and scalable architecture design. Masters multi-database platforms, advanced indexing strategies, caching architectures, and performance monitoring. Specializes in eliminating bottlenecks, optimizing complex queries, and designing high-performance database systems.