https://github.com/adamritter/nostr-relaypool-ts Nostr relaypool TS is a RelayPool implementation on top of nostr-tools' SimpleRelayPool. Implements subscription batching and deduplication and also has optional caching. Probably worth exploring using it in your nostr apps if you are implementing all of this yourself, i want to give it a spin for Habla although I'm not sure if it implements nip-33.