I have been using Odoo 11 Community for Fuel Station for the past one year. I have a few customized apps too. I will get around 3000 orders from Point of sale daily. As the days go on, odoo is getting slower. I tried enabling multiprocessing mode and PostgreSQL tunings.
Now, I am looking for ways to close the fiscal year. I wish to start everything new and I don’t want the previous year's data to remain in the new fiscal year so that the database won’t grow larger and larger. But I should have the preference of restoring the previous year’s data without any issues even if the modules are upgraded.
How to manage closing year-end with the clearance of old records?