What is the best approach to log all DB queries and view them when needed?

Question

Is there an efficient way to log all DB queries in Staging and Production without having a big impact on performance?

Is there a good tool(free or paid) that does it?

The DB Engines I am working with are: MySql and MongoDB

Note: I know how to write all the DB queries into a log file. This solution is too slow for production and I am curious to know if there is a better way to store the logs and then easily find/browse them.

Answer 1

On MySQL you can get query templates and the associated counters from performance_schema. You can use PMM's query analytics to analyze this data.

Answer 2

Turn on the "general log". Beware -- it can chew up disk fast.

The output is all the queries being performed, and it is in a text file.

For chasing "slow" queries, use the slowlog.

(Both are built into MySQL.)