Cross-cutting concern
A cross-cutting concern is a software responsibility or behavior that spans multiple components, features, or layers rather than being localized to one.
ASP.NET Core in Action, 3e
A cross-cutting concern is application behavior that applies across many or all request paths and features rather than one specific resource.
- How it is used
- Uses middleware to provide behavior required across multiple request paths and application layers.
- How deep it goes
- Explains pipeline flow, request modification, response handling, short-circuiting, and middleware-versus-filter scope.
- Examples
- Uses logging, security headers, user association, request language, exception handling, and permission checks as examples.
- What you can do after
- Evaluate whether middleware or filters better fit a cross-cutting behavior’s required scope and framework access.
Read how ASP.NET Core in Action, 3e explains cross-cutting concern →
The Joy of JavaScript
Cross-cutting behavior is behavior that affects multiple parts of a program and is not naturally localized to a single module or class.
- How it is used
- Uses metaprogramming to separate behavior such as logging, tracing, and performance tracking from application logic.
- How deep it goes
- Defines the concern and demonstrates runtime interception with Proxy, Reflect, and before-and-after decorators.
- Examples
- Demonstrates argument validation around Counter methods, with invalid input raising RangeError.
- What you can do after
- Apply JavaScript Proxy and Reflect to intercept methods and add validation before calls or process results afterward.
Read how The Joy of JavaScript explains cross-cutting concern →
Related concepts
- multi-tier applicationcontrasts with · A multi-tier application is an application organized into distinct tiers that separate responsibilities and interact through defined dependencies or interfaces.
- handleruses · A handler is a callable or software component that processes an event, request, message, or other input and performs associated processing.
- securityincludes · The protection of systems, information, resources, and operations against unauthorized access, use, disclosure, alteration, disruption, or destruction.
- middlewareuses · Middleware is an intermediate software component or layer that processes or mediates requests, messages, or operations between other components, often adding behavior or controlling their flow.
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