Infrastructure & Nodes
RPC FAQs
Get answers to the most common questions about Solana RPC nodes, methods, rate limits, and troubleshooting
Billing and Rate Limits
Why do I get rate limited for getProgramAccounts below my plan's rate limit?
Why do I get rate limited for getProgramAccounts below my plan's rate limit?
getProgramAccounts is a resource-intensive method that have an additional rate limiting beyond standard requests per second. Consider filtering parameters, or breaking large queries into smaller chunks to stay within limits.Can I get a specific region for my RPC endpoint?
Can I get a specific region for my RPC endpoint?
Helius automatically routes requests to the optimal region for performance. For specialized regional requirements or dedicated infrastructure, contact our sales team to discuss enterprise options.
Troubleshooting RPCs
Why aren't my sendTransaction requests landing?
Why aren't my sendTransaction requests landing?
Call the Priority Fee API, optimize compute-unit usage, and send the transaction with
skipPreflight: true. See our Transaction Optimization Guide for a step-by-step walkthrough.Why am I suddenly seeing 5xx errors?
Why am I suddenly seeing 5xx errors?
Check our status page for relevant updates. If there’s no related incident, contact support.
Using RPCs
What is the best practice for getting the latest blockhash?
What is the best practice for getting the latest blockhash?
Use
getLatestBlockhash with "processed" or "confirmed" commitment levels for the most recent blockhash. Always fetch a fresh blockhash before submitting transactions to ensure validity. See our getLatestBlockhash guide for details.What are staked connections?
What are staked connections?
Staked connections route your transactions directly to current and upcoming block leaders, bypassing public queues for near-guaranteed delivery. All paid plans automatically use staked connections by default - no code changes required. Learn more in our transaction sending overview.
How far back can I access historical data using standard RPC calls?
How far back can I access historical data using standard RPC calls?
Standard RPC plans provide access to all historical Solana data. Dedicated nodes only maintain ~48 hours of history.