ok so ive been messing with my own proxy pool for a while and keep hitting walls trying to scale it without getting banned or flagged. i have like 200 residential ips but the scraping speed just tanks after a few hours. tried rotating them with a custom python thing but results are all over the place. has anyone actually figured out reliable proxy pooling that works long term? anyone mix datacenter and residential in one pool? how do you deal with session management and how often to rotate? costs are adding up but i need something more stable. also whats the real deal with proxy freshness and ip health checks? imo most guides are either outdated or too simple, i need something thats actually proven to scale. any real world tips or setups that wont cost a fortune?