1. What scene is suitable for redis?
2. What scene is suitable for mongodb?
3. What scenario is not suitable for kv database?
4. Can 4.SNS-based websites completely abandon relational databases?
5. Can 5.B2C websites try to use kv database?
1.redis is similar to membercache and can be used as a sustainable cache. It is not used as a database alone.
2.mongodb has good expansibility similar to mysql
3. Systems involving associative operations
4. Yes, but they will all be used together.
5. Yes, in some data