MySQL可以为我的社交网络应用程序处理数百万用户吗? MySQL与其他数据库技术? [重复]

This question already has an answer here:

We are developing a social networking app.

Following are the features :

1) Video/Photo sharing

2) Ranking / Complex Algorithms

3) Suggesions

4) Other features similiar to Instagram/Facebook

Platforms :

1) Front End - XML + Java (Android)

2) Backend - PHP + MySQL + Apache + Linux (LAMP stack)

Questions :

1) If my app gets 1 Million downloads in a week. Can MySQL handle such huge data?

2) If it can handle, how may concurrent users can it handle at a time without performance issue? Maximum users that MySQL can handle?

3) Any other databases can handle better ?

4) After reaching how many users, I should migrate for other better databases like Mango DB, Cassandra etc..,

My question is only on database technology. Assume that we have provided required server hardware for handling huge data. Also assume that we have optimized Database design with the best quality of coding.

</div>

This question may already answered here in some content. Follow this link : How big can a MySQL database get before performance starts to degrade