When implementing permission checks, understand the hierarchical nature of permissions and avoid redundant checks. Higher-level permissions typically include lower-level ones. Ensure your authorization logic accounts for permission relationships to maintain security while keeping code efficient.
When implementing permission checks, understand the hierarchical nature of permissions and avoid redundant checks. Higher-level permissions typically include lower-level ones. Ensure your authorization logic accounts for permission relationships to maintain security while keeping code efficient.
Example:
// Inefficient - checks each permission separately
const hasAccess = data.user.permissions.triage ||
data.user.permissions.write ||
data.user.permissions.admin;
// Better - understands permission hierarchy
const hasAccess = ['triage', 'write', 'admin'].some(p => data.user.permissions[p]);
// Most efficient - if you know the hierarchy (write and admin include triage)
const hasAccess = data.user.permissions.triage ||
data.user.permissions.write ||
data.user.permissions.admin;
The most appropriate implementation depends on the system’s permission model and whether permission hierarchies are guaranteed to remain consistent over time.
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