When should you use query cache settings?

MySQL Query Cache settings are useful when you want to optimize the performance of your database by reducing the time spent on repetitive queries. It is particularly effective in environments where the same queries are executed frequently and the data does not change often. Query caching can significantly speed up data retrieval, leading to improved response times for your applications.

However, there are scenarios where using query cache is not recommended, such as in environments with high-frequency updates, where the overhead of maintaining the cache could outweigh its performance benefits. It's essential to analyze your specific use case to determine whether enabling query cache settings will be beneficial.

Example Configuration

# Enable query cache
query_cache_type = 1
query_cache_size = 1048576 # 1MB
query_cache_limit = 1048576 # 1MB