RPC request fallbacks

[gmbronco]

RPC endpoints quite often have downtimes during which our jobs don't sync. It impacts our service levels depending on real time data. We can invest in resiliency by configuring multiple RPC endpoints for each network and implement fallbacks when preferred one is down.

Ethers: https://docs.ethers.org/v5/api/providers/other/
Ethers V6: https://docs.ethers.org/v6/api/providers/fallback-provider/
Viem: https://viem.sh/docs/clients/transports/fallback.html