Caching is a key technology that enhances application performance by temporarily storing data for quick access. In this article, we will briefly explore five popular caching modes: read through, write back, write around, direct writingand cache bypass.
1. Read through
this read through Cache mode allows your application to retrieve data directly from the cache. If there is no data in the cache, it fetches the data from the database and stores it in the cache for future access. This mode reduces the number of database read operations and speeds up data retrieval.
2. Write back
along with write back In this mode, updates to cached data are first written back to the cache and then persisted asynchronously to the database. This approach can improve write performance, but requires careful handling to ensure data consistency and avoid potential data loss.
3. Write
this write around The mode process writes directly to the database, bypassing the cache. This means that when the data is later requested, it will be pulled into the cache. This method is useful when writes are infrequent compared to reads, to minimize cache pollution with rarely accessed data.
4. Direct writing
exist direct writing In cache mode, each write operation is performed on both the cache and the database. This ensures that the cache always contains the latest data, providing consistency at the cost of some performance overhead during writes.
5. Cache bypass
this cache bypass mode places the responsibility of managing the cache on the application. When an application requests data, it first checks the cache; if the data does not exist, it retrieves the data from the database and stores it in the cache. This mode allows fine-grained control over caching, but requires more complex logic in the application.
These caching modes serve different use cases and have unique advantages and tradeoffs. Understanding them can help you optimize your application for better performance and user experience.
Want to learn more?
For a detailed discussion of these caching modes and how to implement them effectively, check out my full blog: 5 caching strategies every developer treasures
Happy coding! 🚀