Managed and In-Role Cache were retired on 30th November 2016.
Managed Cache Service and In-Role were retired on 30th November 2016. For more information, see Azure Managed Cache and In-Role Cache services to be retired on 30/11/2016.
Managed Cache Service
Related questions and answers
Yes. In premium tier you can scale out to multiple Redis Cache units.
We recommend new development use the Azure Cache for Redis due to the flexibility it offers. It is based on the open standard Redis protocol that is supported by many programming languages (C/C++, .NET, Go, Java, Node.js, Objective C, Perl, PHP, Python, Ruby and over 29 more languages). This allows it to be used by nearly any workload you might build on Azure.