In the early version of Lemmy that was tracked. But it was decided to remove account karma and some instances removed downvotes as well.
Each instance has a unique experience, this is influenced by what the instance members have been subscribed to. As well as what instances have federated with the one you're using.
There are tools to look into Lemmy metrics but they are intended to gauge the health of the lemmyverse and aren't useful for looking at a single user or post.
But you can see the communities metrics on their page. Active users and such, so you could look at your posts numbers and eyeball it against that with your scale.
But generally a post or comment in the hundreds of upvotes is doing very well.
I'm not a medical professional, this is not medical advice.
So there are factors to consider; the strength of the dosage and the frequency at which it's being consumed. Additionally if there are rest cycles.
The positive effects of caffeine are significantly reduced by the frequency it's consumed. This can lead the user to consume more to reach their desired experience.
The negative effects however are capable of stacking. Such as its impact on blood pressure and one's capacity to regulate emotions. Caffeine is also a poor stimulate for someone who is already fatigued or is experiencing weakened attention. It's best at maintaining ones current level of awareness and fatigue.
One could be accidentally poisoning themselves with vitamins or other additives before caffeine becomes the concern.
It's generally accepted that 400mg of caffeine in a 24 hour period for a healthy individual is the maximum dosage.
To avoid a dependency on caffeine and to experience its positive effects at regular dosages. It's best to practice moderation only by consuming it rarely.
Many people will find this unreasonable. The next best option is to practice rest cycles of equivalent proportions. Such as 2 days on, 2 days off. Going larger than that invites negative effects such as withdrawal and tolerance forming.
Everyone is unique, I'm not trying to write a scientific paper. I invite everyone to scrutinize this information and consult with qualified professionals about their own health before following through with information on the Internet. Addiction in all its forms is a serious matter and deserves respect.