Network & Protocol Guides
How to Query Historical Blockchain Data via RPC
Learn the difference between full, archive, and trace nodes, and how to query past state with eth_getBlockByNumber, eth_call, eth_getCode, and eth_getStorageAt.
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Infrastructure & Operations
Archive Node vs Full Node: What's the Real Difference?
Understand the data retention, query capability, and cost tradeoffs between full, archive, and trace nodes on EVM chains, and when you actually need archive RPC access.
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Why Your WebSocket RPC Disconnects and How to Fix It
Learn why JSON-RPC WebSocket connections drop (idle timeouts, close codes 1006/1008/1001) and how to build resilient reconnection with keepalive and backoff.
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How to Fix RPC 429 Too Many Requests Errors
Learn why blockchain RPC endpoints return HTTP 429 errors and how to recover with backoff, batching, caching, and production-ready request controls.
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RPC Timeout Error: Causes, Diagnosis, and Fixes
Learn why blockchain JSON-RPC requests time out, how to diagnose timeouts with curl and client logs, and how to fix them in production.
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RPC Latency Slow: Causes, Measurement, and Fixes
Learn what drives blockchain JSON-RPC latency, how to measure it with curl, and how to reduce it using geographic endpoints, batching, and caching.
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JSON-RPC Batch Requests: Format, Examples, and Best Practices
Learn the JSON-RPC 2.0 batch request format, how to send multiple calls in one HTTP request, and when to use batching to reduce latency and improve throughput.
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RPC Node Monitoring: Metrics, Alerts, and Failover
Learn how to monitor blockchain RPC endpoints and nodes with Prometheus, Grafana, health checks, and alerting, plus how to build high-availability failover.
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Public RPC Endpoint Risks: What to Know Before Going to Production
Free public RPC endpoints are convenient but risky for production. Learn about rate limits, data consistency, security, and when to switch to dedicated endpoints.
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