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Monthly Archives

July, 2014

In addition to the built-in events triggered by the API calls, Backendless supports custom, developer-defined events. Custom business logic code, which is executed on the server-side, can be attached to either built-in events or the developer-defined ones. Custom events can be triggered through a specialized API call from a client library or by other custom business logic. Dispatching a custom event may have event arguments. The server-side code which handles an event may also return a value to be delivered back to the client-side that dispatched the event. This feature can be used to invoke custom business logic from the client-side. Developing custom event handlers is very easy with Backendless – you can register an event using Backendless console, which automatically generates the source code required for declaring an event handler. Just like with the built-in events, custom event handlers can be debugged on the developer machine before the code is pushed to production.

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There are a lot of scenarios when custom business logic on the server-side may need to connect to an external host. Whether it is a service call to a third-party service or a retrieving data from a proprietary system, the code must establish a connection to an external host. Up until now if you tried to connect elsewhere except for Backendless’ API endpoint, you’d be getting an exception in your custom server-side code – we used to block all hosts. Today we released an update which allows you to connect to any computer located elsewhere. The process of establishing a connection does not change – you can connect to any port using any protocol. However, the hosts to which your connect connects, must be registered with Backendless. We have added a special section in Backendless console, which you can see at Manage > App Settings > External Hosts:

external hosts - Connecting to external hosts from custom business logic

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We build and release a lot of software – core service, 5 SDKs and a special utility for custom business logic. We always wanted to visualize our release history to make it easy to navigate through the releases and see how a specific SDK or the core service is evolving. Today we release our release history. You can see it at:
https://backendless.com/backend-as-a-service/release-history/

The system let’s you see our progress and the history of changes for everything we develop. Go ahead and play with it and let us know what you think.

release history 300x280 - Interactive Release History

Enjoy!

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