Show HN: RDST – A local agent that watches Postgres/MySQL for query regressions

Category: database

Tags: postgresql, mysql, query-optimization, database-monitoring, ai-agent

Score: 7.3/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 7)

RDST is an always-on local agent that monitors PostgreSQL and MySQL query statistics to detect slow queries and regressions, then uses EXPLAIN plans and schema analysis to recommend concrete fixes like indexes, setting changes, or rewrites. It combines a Python CLI, web UI, and Electron desktop app, and runs read-only with local data storage, making it a practical tool for database performance tuning.

Target audience: backend devs, database administrators, devops

Repository: https://github.com/readysettech/rdst · Python · Apache-2.0 · 19 stars

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