You should have read these documents before you deploy.
https://github.com/justintv/Twitch-API/blob/master/authentication.md
The maximum limit seems to be 100, and the current number of teams are 2058. With the suggested rate limit of one call per endpoint per minute, your entire database should refresh in about 20 minute cycles. You shouldn’t be concerned about the time, since I figure this is a list that changes relatively slowly. Also, depending on your intended application, it shouldn’t need to always be up to date. You could either run this once per every [24h] or spread it out over [24h].