What are the advantages and disadvantages of using caching in systems?

Caching in systems allows significantly improving performance by storing frequently used data in fast access (for example, in memory). This reduces the load on the database or other slow data sources and decreases response time.

Advantages:

• Faster data access.
• Reduced load on servers and databases.
• Increased system scalability.

Disadvantages:

• Possibility of data becoming outdated (cache may contain stale information).
• Complexity of cache management (e.g., invalidation, synchronization).
• Additional memory consumption.

Example: In Go, you can use built-in maps or specialized caching libraries with TTL (time-to-live).