We're using Rails as the main framework. We have a web, worker, and cable hobby dyno. We have a Standard 0 Postgres database.
My question is what configuration and features of Heroku can I leverage to handle large jumps in load? How soon should I invest in New Relic or another APM? What other aspects of DevOps 101 am I missing?
My background is in software development more so than operations. Thank you for your help!