Read-Through Cache strategy | The Art of System Design

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In the Read-Through Cache strategy, the cache sits in-line with the database. This means the application interacts with the cache, and the cache itself handles any communication with the database when necessary. Essentially, the cache acts as a smart intermediary between the application and the primary data store.

Here’s how Read-Through Cache works:

When the application requests data, it first checks the cache.

If the data is available in the cache, that’s a cache hit, and the data is returned immediately to the application.

If the data is not available in the cache (a cache miss), the cache automatically fetches the missing data from the database.

After retrieving the data from the database, the cache populates itself with the data and then returns it to the application.

Видео Read-Through Cache strategy | The Art of System Design канала Software Interviews Prep