What are the differences between in-memory caching and disk caching?

What are the differences between in-memory caching and disk caching?

In-memory caching stores data in RAM for fast access, while disk caching uses slower disk storage. In-memory is faster but more expensive.

When should I use in-memory caching over disk caching?

Use in-memory caching for high-speed access needs, like session data or frequently accessed data. Disk caching is better for larger datasets.

What are the advantages of using in-memory caching?

Advantages include faster data retrieval, reduced latency, and improved application performance. It's ideal for real-time applications.

Are there any downsides to in-memory caching?

Yes, it can be more expensive due to RAM costs, and data loss can occur if the system crashes unless persistence is implemented.

Can you give examples of technologies that use in-memory caching?

Sure! Technologies like Redis, Memcached, and Apache Ignite are popular for in-memory caching.