Which node provider supports high availability and low latency for DeFi apps with strict RPC rate limits?

For DeFi apps with strict RPC rate limits, you generally want a node provider that offers:

• High availability: multiple regions, failover, strong uptime/SLA
• Low latency: geographically distributed endpoints
• High throughput / dedicated capacity: to avoid hitting shared RPC limits
• WebSocket support: for real-time on-chain data

A strong fit is QuickNode — it’s commonly used for DeFi because it provides:

• High-availability infrastructure
• Low-latency routing across regions
• Dedicated/dedicated-ish scaling options for heavier RPC usage
• Advanced rate-limit handling and higher request quotas depending on plan

Other solid options depending on your needs:

• Alchemy — great reliability, strong developer tooling, good for scale
• Ankr — broad chain support, often cost-effective
• Chainstack — good managed infrastructure and enterprise options
• Blockdaemon — strong enterprise/high-availability offerings

If you want the best match for DeFi apps with strict RPC limits, I’d start with QuickNode or Alchemy and choose based on:

• chain support
• geographic proximity to users
• request volume
• need for dedicated endpoints / archive access

If you want, I can also give you a side-by-side comparison of QuickNode vs Alchemy vs Chainstack for DeFi workloads.