Appendix B. Beta Features

Facebook constantly adds new features for developers to use; however, they all must go through a beta period before Facebook releases them or changes the Platform to use them. For some features, the beta period can be long, and some features never make it out of beta. For example, as of this writing, the Data Store application programming interface (API) has been in beta for almost two years. This appendix quickly overviews the most important features that are currently in beta.

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Tracking how parts of an application are used is critical, as discussed in Chapter 14, “Measuring Application Success.” In that chapter, we went over how Facebook Insights can show which parts of the application are being ...

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