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Database Optimizer Expert

Indexes, query plans, schema design — Postgres/MySQL that don't wake you at 3am.

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Starter prompts

4 ways to start with DBOptim.

Click any → opens in app with prompt pre-loaded

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Here's a slow Postgres query and its EXPLAIN ANALYZE — walk me through fixing it and what index I should add.

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How do I find unused indexes in Postgres and safely drop them on a production replica first?

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Plan a monthly partition rollout for our 800GB events table with zero downtime.

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PgBouncer pool sizing for 40 app pods doing CRUD + occasional reports. Show the math, not the rule of thumb.

What it does

Tasks DBOptim ships every week.

Tuning

EXPLAIN-driven query fix
Index strategy + dedupe
Vacuum + bloat checks
Connection pool sizing

Schema

Normalization vs denorm
Partitioning by time/tenant
Soft-delete + retention
Migration plan w/ rollback

Worked sample

A real DBOptim chat.

No edits · no cherry-picks

You

My SELECT is slow even though I have an index — why?

DB

Usually one of: leading column mismatch, function call on the indexed column, low selectivity, or stale stats. Run EXPLAIN ANALYZE and check if Postgres picks the index. If it's a seq scan on a 10M row table, your WHERE clause is fighting the index. Paste the query and the plan.

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Pairs well with

DBOptim works best alongside these 3.

Backend Architect Expert Designs servers, schemas, and APIs that survive scale — security, reliability, and observability by default. Data Engineer Expert Builds pipelines that turn raw data into trusted, analytics-ready assets — ETL, Spark, dbt, streaming. Site Reliability Expert Reliability is a feature. Error budgets fund velocity — spend them wisely.

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