NF and Redis about noahgameframe HOT 1 CLOSED

In the NF examples, some functions, such as VerifyAccount, accept only the string strAccount, and not
strAccount + "_AccountInfo "
----------------Just a name to remember it easier, you can change as you like.

virtual NFListstd::string GetDriverIdList() = 0;
virtual NF_SHARE_PTR GetDriver(const std::string& strID) = 0;
virtual NF_SHARE_PTR GetDriverBySuitRandom() = 0;
virtual NF_SHARE_PTR GetDriverBySuitConsistent() = 0;
virtual NF_SHARE_PTR GetDriverBySuit(const std::string& strHash) = 0;

Imagine that you want to create a scalable database backend with "n" database servers for your application or a distributed system with a cluster of servers. To meet the goal we would meet the rules below:

a. We should be able to distribute the incoming queries uniformly among the set of "n" database servers
b. We should be able to dynamically add or remove a database server
c. When we add/remove a database server, we need to move the minimal amount of data between the servers

    //get redis driver by consistent hashing, normally we use this one
virtual NF_SHARE_PTR<NFIRedisClient>  GetDriverBySuitRandom() = 0;

    //some special features that we want the data away store in a special database we use this one
virtual NF_SHARE_PTR<NFIRedisClient>  GetDriverBySuitConsistent() = 0;

    //get redis driver by the hash value that you pass
virtual NF_SHARE_PTR<NFIRedisClient>  GetDriverBySuit(const std::string& strHash) = 0;

References below:
https://www.acodersjourney.com/system-design-interview-consistent-hashing/
https://en.wikipedia.org/wiki/Consistent_hashing

from noahgameframe.