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Front Controller

StructuralDecouplingLess than 1 minute

Intent

Introduce a common handler for all requests for a web site. This
way we can encapsulate common functionality such as security,
internationalization, routing and logging in a single place.

Class diagram

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Front Controller

Applicability

Use the Front Controller pattern when

  • you want to encapsulate common request handling functionality in single place
  • you want to implements dynamic request handling i.e. change routing without modifying code
  • make web server configuration portable, you only need to register the handler web server specific way

Real world examples

Credits