Profiling results pile up in production

[semaperepelitsa]

MiniProfiler works great on my development machine. However, on our production server the old profiling results never disappear. You reload a page and you see all previous results plus a new one. The results appear in a random order.

I cannot reproduce the issue locally. Also, the storage type doesn't matter, I have tried both file and memcache (memory store wouldn't work in our multi-process server). While digging through your library, I have tried a method for removing a result manually in Rails console and it did indeed disappear after page reload.

myip = "..."
ids = Rails.cache.read("MPMemcacheStore-#{myip}-v")
mp = Rack::MiniProfiler.config.storage_instance
mp.set_viewed(myip, ids.last)

Do you have any ideas or suggestions to help debug this issue?