Fast, auto-generated streaming JSON parsing for Android

Welcome to the Instagram Engineering Blog, where we share insights on building and scaling our service. The Instagram engineering team is constantly looking at how we can improve the speed, reliability and overall performance of the app. One of the things we wanted to improve is how quickly people using the Android app can view “News” in their Instagram feed—the place you go to see when people tag

[yass]

" First, ObjectMapper incurs a significant one-time penalty the first time it encounters an object it has not previously serialized/deserialized. / Second, ObjectMapper performs a lot of memory allocations, which can stress the garbage collector. Finally, it retains a large memory footprint "