Ponder Ship Week, Day 2

New Viem Transports: `loadBalance` and `rateLimit`

Ponder makes a shitload of RPC requests. Usually, RPC request throughput is the bottleneck on historical sync speed.

These new transports give users more knobs to play with when tuning performance against different nodes & RPC providers.

http://ponder.sh/docs/utilities/transports

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Building ponder.sh. EVM, TypeScript, open-source enjoyer.

The `loadBalance` transport distributes requests across the inner transports using a simple round-robin strategy.

Our ERC20 example app syncs in 83 seconds while balancing requests across 4 public mainnet RPC URLs. No paid plan required!

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The `rateLimit` transport makes it easier to align client-side load with server-enforced rate limits.

If you spam requests and rely on retries (backoff + "Retry-After" header), you waste lots of time in timeouts. It's much more efficient to use a client-side rate limit.

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We built `loadBalance` and `rateLimit` with Ponder workloads in mind, but published them in a new browser-friendly and tree-shakable package (@ponder/utils) that any app can use.

http://npmjs.com/package/@ponder/utils

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The Viem Transport API is awesome. It's composable, straightforward, and makes it easy to interact with any Ethereum RPC under the sun.

Thanks @wevm !

Very handy, definitely thinking of using these viem transport utils in other projects!