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Why redis is suitable for caching

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Release: 2019-06-17 10:46:49
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Redis is an in-memory cache database;

The data model is: key - value, the format used by non-relational databases to store data;

Why redis is suitable for caching

Database cache: (Recommended learning: Redis video tutorial)

The key value of the sql statement, the query result resultSet is the value, when When accessing the same query statement (select * from t_product), as long as it has been queried before, the call cache will directly return the resultSet, saving the time of the database reading disk data.

Persistence layer cache:

Reduces the time to connect to the database; reduces the process of encapsulating resultSet into an object.

Caching of business layer and control layer:

Reduce the call level.

Describe the logic of caching in the business layer:

Query product information

Judge whether the current query has data in the cache

If If there is data, return directly and the current request ends;

If there is no data, query the persistence layer database data, obtain the data storage and cache it for subsequent access;

More Redis related technologies Article, please visit the Introduction to Using Redis Database Tutorial column to learn!

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