We used it for our ETL processes at work as well as some web applications that use Java 8. Its good because you can control how much space your application uses up but also the amount of memory required so its fair enough. I don't like when they start charging monthly fees once there's more than 1 GB worth or something along those lines where i think thats unfair if u have less then 2GB free already! If my apps need 10+ gb ram usage this could be an issue though? It helps us keep track of what we've been using within different systems/apps etc..