In RxJS observables are cold, or unicast by default. These operators can make an observable hot, or multicast, allowing side-effects to be share among multiple subscribers.
⭐ - commonly used
- Hot vs Cold Observables 📰 - Ben Lesh
- Unicast v Multicast 📰 - GitHub Discussion
- Demystifying Hot and Cold Observables 📹 - André Staltz