What types of caches are there and what are their advantages and disadvantages?

Main types of cache and their features:

1. CPU Cache

   • Pros: Very high access speed, reduces delays when working with memory.
   • Cons: Limited size, management complexity.

2. In-memory Cache

   • Pros: Fast access, reduces load on databases or external services.
   • Cons: Limited by RAM size, data can be lost on restart.

3. Disk cache (e.g., SSD cache)

   • Pros: Large capacity, retains data across restarts.
   • Cons: Slower than memory, SSD wear.

4. Distributed cache (e.g., Redis, Memcached)

   • Pros: Scalability, high availability, shared cache for multiple applications.
   • Cons: Network latency, setup and maintenance complexity.

5. Browser cache

   • Pros: Speeds up webpage loading, reduces traffic.
   • Cons: Can store outdated data.

6. Application-level cache (e.g., local cache in Java using Caffeine or Guava)

   • Pros: Easy to use, flexible.
   • Cons: Limited by application memory, not suitable for distributed systems.

Cache choice depends on requirements for speed, volume, stability, and architecture complexity.