Tag: nosql

Notes on Redis DB

Redis provides atomic operations on keys Keys can have TTL (-2 expired, -1 never expire, n seconds to expire) Values are stored as a list. The list is indexed and can be queried with ranges. List items can be popped, Left/Right pushed. Values can also be stored as […]

Mongo DB: Good to know things

Mongo DB is a No-SQL, free, open-source solution that is highly scalable, highly available and high performance solution. Engine is coded in C++ Works in a client-server model Major components: mongod: The storage server mongos: The sharding server config server(s): Stores metadata that accomplish sharding Is actually a […]