RPC/API Matrix

Solana RPC is used for network state reads, transaction sending, transaction simulation, and live update subscriptions (Solana RPC docs).

Interface	Status	Best For	Transport	Production Notes
JSON-RPC HTTP	Standard	Reads, simulation, transaction submission, batch requests	HTTP	Use private/dedicated RPC, method allowlists, and rate limits.
WebSocket PubSub	Standard	Account, log, program, slot, and signature subscriptions	WebSocket	Bound connection counts and reconnect with backoff.
Commitment levels	Recommended	Choosing freshness vs finality for reads and confirmations	HTTP / WebSocket option	Use confirmed for most UX and finalized for accounting/indexing checkpoints.

warning

Public RPC endpoints are shared dev/test infrastructure, not production capacity. Excess traffic can receive 429; blocked traffic can receive 403.