RBAC角色权限矩阵与策略引擎最佳实践

背景与价值RBAC通过角色聚合权限，配合策略引擎可灵活授权资源-动作并记录审计，满足合规与安全要求。统一规范角色矩阵：定义角色到资源-动作的映射。策略引擎：根据上下文与角色计算允许与拒绝。审计：记录拒绝与越权尝试。核心实现矩阵与策略type Action = 'read' | 'write' | 'delete' type Resource = 'users' | 'posts' | 'orders' type Role = 'admin' | 'editor' | 'viewer' const matrix: Record<Role, Record<Resource, Set<Action>>> = { admin: { users: new Set(['read','write','delete']), posts: new Set(['read','write','delete']), orders: new Set(['read','write','delete']) }, editor: { users: new Set(['read']), posts: new Set(['read','write']), orders: new Set(['read']) }, viewer: { users: new Set(['read']), posts: new Set(['read']), orders: new Set(['read']) } } function allowed(role: Role, resource: Resource, action: Action): boolean { return !!matrix[role]?.[resource]?.has(action) } type Context = { role: Role; resource: Resource; action: Action } function gate(ctx: Context): boolean { return allowed(ctx.role, ctx.resource, ctx.action) } 落地建议定义清晰的角色矩阵与资源-动作集合，按最小权限分配并定期复核。在策略引擎中结合上下文信息实现精细授权与审计。验证清单角色矩阵是否完整且符合最小权限；策略是否正确计算并记录审计。