I have a Rails app on Heroku using RedisToGo with gem redis. How do I do something similar to:
$ redis-cli monitor
but on RedisToGo?
Do you mean that ?
redis-cli -h host.redistogo.com -p portnumber -a yourpassword monitor
If you are looking for a monitoring tool take a look at RedisLive it requires some configuration and is self hosted but does the job.
On the contrary if you are looking for a full featued Redis GUI (real-time editor/client list/slowlog/data-viz, online monitoring, configuration, advanced terminal and so on...) you will want to give a try to Redsmin.
Disclaimer: I'm the founder of Redsmin.