SaaS 租戶隔離應由應用程式還是 PostgreSQL 強制執行？
Backend engineers, settle this debate. Should a SaaS application EVER be trusted to enforce tenant isolation by itself? Or should PostgreSQL reject cross-tenant access even when application code makes a mistake? What's your production setup?
Anthony Emmanuella Mmasinachi 向後端工程師提出，SaaS 租戶隔離應由應用程式還是 PostgreSQL 負責。文章追問，應否讓 PostgreSQL 在應用程式程式碼出錯時仍拒絕跨租戶存取，並徵詢讀者在正式環境中的做法。
DEV Community
0 Add reaction
0 Like 
0 Unicorn 
0 Exploding Head 
0 Raised Hands 
0 Fire
0 Jump to Comments 0 Save Boost
Pick as gem
Copy link
Copied to Clipboard
Share to XShare to LinkedInShare to FacebookShare to Mastodon
Anthony Emmanuella Mmasinachi Posted on Oct 29
Backend engineers, settle this debate.
Should a SaaS application EVER be trusted to enforce tenant isolation by itself?
Or should PostgreSQL reject cross-tenant access even when application code makes a mistake?
What's your production setup?
Top comments (0)
Subscribe
Personal Trusted UserCreate template Templates let you quickly answer FAQs or store snippets for re-use.
Submit PreviewDismiss
Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink.
- [x] Hide child comments as well
Confirm
For further actions, you may consider blocking this person and/or reporting abuse
Promoted
Tiger Data (Creators of TimescaleDB)Promoted
Agent Memory Is a Search Problem, Not a Storage Problem ❌
Long-term conversational memory is the ability to recall and reason over months of past conversations. It is one of the hardest unsolved problems in AI assistants, and the field has converged on a shared assumption about how to solve it.
Anthony Emmanuella MmasinachiFollow
Founder of Agata Proxima | Full-Stack Developer building open-source PostgreSQL security tools with Rust. Focused on tenant isolation, database security, and scalable SaaS infrastructure.
- Joined Oct 25, 2026
More from Anthony Emmanuella Mmasinachi
Your PostgreSQL Query Works. That's Exactly What Makes This Bug Dangerous. #opensource#security#rust#backendI Put a Rust Proxy Between My App and PostgreSQL. Here's What Happens to Every Connection. #database#postgres#rust#opensource
TesslPromoted
See how Anthropic, Google DeepMind, Microsoft & Booking.com build with AI agents at scale
The enterprise track brings honest, from-the-trenches stories — platform teams, agent governance, and models at scale — from the companies defining how AI ships to production. In Brooklyn, 02–04 Nov 2026. Use code MLH20 for 20% off any ticket.
Promoted
👋 Kindness is contagious
Join DEV and unlock its full potential—access a tailored experience with dark mode, specific reading preferences, and much more.
Start Now
DEV Community — A space to discuss and keep up software development and manage your software career
Built on Forem — the open source software that powers DEV and other inclusive communities.
Made with love and Ruby on Rails. DEV Community © 2016 - 2026.
We're a place where coders share, stay up-to-date and grow their careers.
來源：DEV Community · dev.to