NoSql-redis

1.NoSql: not only sql Anti-sql Movement

two。 Features:

Storage in kye-value form-does not follow the basic requirements of data

Such as sql standard, ACID attribute (rollback mechanism), table structure

Non-relational, distributed, open source, horizontally scalable

Deal with a huge amount of data

Run on a cheap PC server cluster

Broke the performance bottleneck

3. Adapt to the scene

Read and write data with high concurrency

Efficient storage and access to massive data

High scalability and high availability of data

4.Redis is an open source,advanced key-value

Store.it isoften referred to as a data struceure

Server sincekeys can contain stings,hashes

Lists,sets andsorted sets

These data types all support push/pop and add/remove.

To get intersection and richer operations, Redis supports sorting in different ways

In order to ensure that the efficiency data is cached in memory, the updated data can be updated periodically.

Write to disk or modify operation write to append record file

5. The API languages provided include: C, and.