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

We noticed during the course of many many years of DBA related work that fixes to database issues and queries are always reactive. An entire database can fall over extremely quickly when an unbounded query grows without warning. Traditionally, DBAs hear complaints of slowness and follow a methodical process: - manually browse pg_stats or other database related performance internal tables - see which queries are slowest - figure out what indexes are missing - figure out which indexes are actual

五维评分

付费意愿
45
需求真实度
50
个人可落地
60
竞争空间
35
新鲜度
50

AI 分析

痛点:数据库查询性能回归(如索引失效、表膨胀导致全表扫描)只能被动响应,缺少常驻监控与自动诊断,问题往往在一夜之间爆发。

目标用户:DBA、后端/平台工程师、使用 PostgreSQL/MySQL 的中小型 SaaS 团队

证据:One of our users's checkout page went from loading instantly to taking 11 seconds in a single night with no code change. ... their order table grew by 40M rows because BI team had injected historical data and suddenly postgres started doing full table scans.

变现:开源核心 + 云端托管/团队版订阅(多实例监控、告警、审计日志、自动索引建议),或按数据库实例数收费的 SaaS。

MVP:两周内做一个只读本地 agent:定时抓取 pg_stat_statements/慢查询日志,按查询指纹记录耗时基线,检测偏离后本地告警并给出缺失索引建议,先支持 Postgres 单机。

竞品:pganalyze、Datadog Database Monitoring、Percona Monitoring and Management、pgMustard、AWS Performance Insights

摘要:RDST 是一款本地桌面 agent,只读连接 PostgreSQL/MySQL,每分钟对比每条查询的历史性能以捕捉查询回归。团队以用户 checkout 页面一夜之间从秒开变成 11 秒、订单表因 BI 注入历史数据暴涨 4000 万行导致全表扫描为案例说明痛点。HN 发布仅 5 points、1 条评论,热度很低,且该赛道已有 pganalyze、Datadog DBM 等成熟竞品。