Good bosses, I want to ask next recently to our company to add tasks to financial product users of the system function, similar is the daily attendance, perform everyday tasks such as sharing a day to friends or browse, comment enough articles, etc., customer service through the IOS, android, and web client access, such as hall

My side background belongs to do the task system from scratch, how to design the most reasonable? Small hundreds of thousands of users at present, but the future is likely to spread to millions of magnitude or more,

Is all clients every step of the mission to upload and real-time synchronous processing library into the cache, or upload real-time schedule task into a message queue and then returns the client display, but asynchronous let China data processing tasks?
Is there any technical information on this, the feeling on the network is very less,