I am trying to design a replay mechanism that will enable users to replay messages from the queues. The best design I have come up for an exchange that contains multiple queues and multiple consume...

I followed the instructions here to record an ARKit mov session using the Reality Composer app, but when I load in Xcode and run with an ARKit app, the app shows a black screen and shows errors: Th...

For Apple's new ReplayKit Framework in iOS 9 you have to get permission to access microphone and record screen. It seems like on when I run my test application in xcode on on every start up it re-...

I am making a network using Retorfit + RxJava2 and I want to cache the response for 30 seconds. Any calls made after 30 seconds interval should get the latest results from server. I tried doing thi...

This question has come up a lot but I haven't discovered the answer. I've read the OAUTH 2 spec and the separate security "considerations" document but I'm still fuzzy on something. The circumstan...

We are running a 3-member MongoDB replica set in production environment. We would need to maintain a clone of that replset, which is called "mirror," to do internal analytics. This mirror does not...

I am developing a mobile application which sends some encrypted data to a Bluetooth device and this Bluetooth device sends the data to server. My question is that in this case how can I prevent rep...

I am interested in building a parser for my own enjoyment using PHP. What do I need to know? What suggestions would you have for me? How do I even open a Starcraft 2 replay using PHP?