RPC Circuit Breakers for Blockchain Bots: Safe Provider Failover

A provider may answer health checks while logs, simulation, or transaction submission is degraded.

Model the failure correctly

Score health by chain, region, provider, and method class using lag, timeout, protocol errors, and peer disagreement.

Collect evidence

Exclude caller mistakes from provider scoring and distinguish rate limits from invalid data.

Build the control path

Use closed, open, and half-open states with jittered probes to prevent fleet-wide recovery storms.

Handle edge cases

On failover, enforce chain and minimum-context checks and reconcile ambiguous transaction submissions.

Recovery procedure

Set a total deadline and retry budget across providers to prevent outage amplification.

Production metrics

Track breaker duration, half-open success, stale-head rejects, failovers, and ambiguous sends.

TierZero can help implement or review this architecture through our relevant engineering service.

Primary reference

See the official technical documentation and pin the exact API behavior used by your deployment.

Discuss your system with TierZero.