RPC resiliency, nonce burning, more metrics #65
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ConjunctiveNormalForm
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May 6, 2025
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On Unichain, we see:
replacement transaction underpriced(aka nonce re-use)Note, this is not occurring on Base despite using the same logic.
The hypothesis as to why this is happening:
On Unichain, RPC providers experience extreme latency (100-1k blocks of delay). This causes the thread to get stuck waiting for confirmations which never arrive. This prevents the keys from being unlocked. When re-deploying the service, the keys are all unlocked again however the old txs are stuck in the mem-pool. Because the old txs are still stuck in the mempool, the new txs cannot be processed without first burning the nonce.
This PR adds a 10 second timeout to the awaiting confirmation process and a nonce burning method in case the tx submission fails due to
replacement transaction underpriced.Bonus: the PR also adds some new order metrics and logs.