Last night my customers experienced something like 30 minutes of downtime. The person I talked to said when she tried to log in, she got some kind of error, and from her description, I could tell it was not a regular 500 error or anything like that.
How might I try to find the cause of the downtime? Running
heroku logs only gives me the last 1500 lines of production logs, which is useless because the downtime happened longer ago than that. I'm somewhat at a loss.
(It's a Rails app, if that makes any difference.)