[benmccann]

Very interesting. I wonder if they tried running MongoDB on SSD. I would think that might mitigate having to have their working set in memory and potentially make the cold start problem a bit better. It'd certainly seem easier than migrating datastores.

[freerobby]

Thanks for watching. We didn't try running Mongo off of SSDs. We're on AWS, and we were using Mongo long before SSD storage was available. I suspect SSDs would help quite a bit with cold starts, albeit at a significant additional cost.