What is cache hit ratio and why is it important?

What is cache hit ratio and why is it important?

Cache hit ratio is the percentage of requests that are served from the cache rather than the main data source. It's important because a higher ratio means faster data retrieval and reduced load on the main system.

How do you calculate the cache hit ratio?

You calculate it by dividing the number of cache hits by the total number of cache accesses (hits + misses) and then multiplying by 100 to get a percentage.

What factors can affect the cache hit ratio?

Factors include cache size, the algorithm used for cache management, and the nature of the data being cached.

Can a low cache hit ratio be improved?

Yes, it can be improved by increasing cache size, optimizing cache algorithms, or adjusting the data being cached.

What tools can I use to monitor cache hit ratio?

You can use monitoring tools like Prometheus, Grafana, or built-in analytics from your caching solution to track cache hit ratios.