#Catberry Services
In Catberry all framework components such as Logger or Universal HTTP(S) Request are called as services.
Whole Catberry architecture is built using [Service Locator] (http://en.wikipedia.org/wiki/Service_locator_pattern) pattern and Dependency Injection. Service Locator is a Catberry core component that knows every other Catberry component. All these components can ask Service Locator to get instance of some other component. For example, every component and even userland catberry module can ask for a Logger to log messages to console.
When Catberry initializes itself it fills Service Locator with own set of components, but framework users can also register own components and even replace implementation of some Catberry components. For example, you can replace Logger service in Locator with your own logger which sends messages to Graylog (or any other).
To register your own components you should keep in mind that you probably need different implementations of your component for server and browser if it depends on the environment.
Learn more how to use Service Locator in next section.
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