Hacker News: You’re protecting your data wrong – Introducing the Protected Query Pattern

Source URL: https://kilpi.vercel.app/blog/2025-03-27-introducing-the-protected-query-pattern/
Source: Hacker News
Title: You’re protecting your data wrong – Introducing the Protected Query Pattern

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AI Summary and Description: Yes

Summary: The text introduces the “Protected Query Pattern,” a refined approach for securing data access in full-stack applications. It emphasizes the significance of maintaining clear authorization logic that can be reused and maintained efficiently, mitigating common pitfalls encountered in traditional authorization methods.

Detailed Description:

The text outlines a novel solution for handling data authorization in full-stack applications by introducing the Protected Query Pattern. This pattern is of particular interest to security and compliance professionals who are tasked with developing secure data access mechanisms in increasingly complex application environments.

Key insights and contributions of the Protected Query Pattern include:

– **Context of Complexity**: The guide highlights the challenges faced in securing modern full-stack applications, where managing authorization across various contexts can lead to maintenance difficulties and potential data leaks.

– **Need for a Structured Approach**: It argues against scattered SQL queries across the codebase that complicate authorization and increases the risk of errors, advocating for a structured data access layer.

– **Presenting the Solution**: The protected query pattern wraps pure query functions with an authorization layer, allowing developers to:
– Use `query.protect(…args)` for secure query execution that includes authorization checks.
– Use `query.unsafe(…args)` for direct access to the pure query function, enabling flexibility in contexts where the same query needs to be executed without authorization logic.

– **Benefits of the Protected Query Pattern**:
– Explicit intent when calling queries improves code readability.
– Reduces duplication of authorization logic, thus minimizing the risk of errors.
– Simplifies maintenance of code over time.
– Enables caching of pure query functions due to their stateless nature.

– **Enhanced Data Redaction**: The pattern elegantly handles data redaction by allowing the authorization logic to determine what data is visible based on user’s permissions without adding complexity or duplicating logic.

– **Integration with Kilpi**: While the text emphasizes using Kilpi as a tool to implement this pattern, it reassures developers they can apply these concepts even without this specific library. Centralized authorization logic is presented as an additional advantage.

– **Real-World Applicability**: The author emphasizes that the pattern is based on challenges observed in real production projects, making it relatable and applicable for professionals across the software development landscape.

In summary, the Protected Query Pattern presents a structured and effective approach to data authorization that not only increases security but also enhances code quality and maintainability, making it a valuable concept for professionals in AI, cloud, and infrastructure security domains.