- Debug logs can contain private informations that should not be stored in the log system. For example email can be considered PII, which mean that your logs now require to be able to comply with GDPR (assuming you are operating in EU) and you need to provide and remove that informations on request, including historical data.
- Overloading logging system. Debug logs are often defined to be very descriptive and can contain a lot of information, as well as fire quite often. This can overload logger and then cause backends/handlers to just drop them on the flor to prevent system from DoS.
- Signal to noise ratio. Debug logs can be quite noisy and can hide important and relevant information in SQL queries and stuff like that.
- Network transfer in case of centralised logging systems. Mostly the same points as in 2., but with different place where the slowdown/congestion can happen.
3 Likes
