Multi-tenant além do TenantId: problemas reais e aprendizados em sistemas .NET

May 25, 2026 · 8:52 PM UTC ·5 min read · 0 reactions · 0 comments · 45 views

#dotnet #multitenancy #architecture #softwareengineering

TL;DR · WeSearch summary

The article discusses the challenges of implementing multi-tenancy in .NET systems beyond simply adding a TenantId column. As systems grow, ensuring data isolation becomes increasingly complex and relies heavily on developer discipline. The author shares their approach to centralizing tenant information and using Global Query Filters to mitigate human error and improve architecture.

Key facts

▪Multi-tenancy in SaaS systems often begins with adding a TenantId column, but this approach can lead to significant challenges as the system scales.
▪The reliance on developers to remember to include TenantId filters can result in data isolation failures, particularly in complex scenarios.
▪The author emphasizes the importance of treating multi-tenancy as an architectural responsibility rather than solely a coding task.

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Original publisher	DEV.to (Top)
Canonical URL	https://dev.to/lhvizza/multi-tenant-alem-do-tenantid-problemas-reais-e-aprendizados-em-sistemas-net-5df9
Publication time	Mon, 25 May 2026 20:52:53 +0000
Retrieval time	2026-05-25T21:07:40.563Z
Last seen	2026-05-25T21:07:40.563Z
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Opening excerpt (first ~120 words) tap to expand

try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 1930561) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Lucas Vizza Posted on May 25 Multi-tenant além do TenantId: problemas reais e aprendizados em sistemas .NET #dotnet #multitenancy #architecture #softwareengineering Em muitos sistemas SaaS, o multi-tenant começa de um jeito aparentemente simples: adicionamos uma coluna TenantId nas tabelas e seguimos o desenvolvimento normalmente. O problema é que o desafio nunca foi adicionar a coluna. O verdadeiro desafio é garantir que ninguém esqueça dela.

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