fix(L2-config): disable mempool sync on OP Stack and Arbitrum chains#1599
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op-geth and arbitrum-nitro do not implement the newPendingTransactions
subscription filter. Without disableMempoolSync: true, Blockbook logs:
initializeMempool EthSubscribe newPendingTransactions:
invalid subscription type for subscribe
and wastes resources on repeated resubscribe attempts.
This was already fixed for bsc_archive, polygon_archive, and
base_archive. Apply the same fix to the remaining L2 coin configs:
- optimism, optimism_archive
- base
- arbitrum, arbitrum_archive
- arbitrum_nova, arbitrum_nova_archive
pragmaxim
requested review from
Copilot and
cranycrane
and removed request for
Copilot
July 2, 2026 18:00
…ncurrency Trezor Suite's Blockbook websocket client caps concurrent in-flight requests at 42 (blockchain-link/src/workers/blockbook/index.ts:481). The old default of 0 disabled the server-side limit entirely, making per-connection getAccountInfo abuse bounded only by the 2500 msgs/10 min rate limiter. Change the default to 42 so the server-side descriptor-count limit activates automatically. The env var override is preserved for operators who want a different value.
cranycrane
approved these changes
Jul 3, 2026
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On restart, L2 chains (OP Stack / Arbitrum) log:
op-geth and arbitrum-nitro do not implement the
newPendingTransactionssubscription filter. WithoutdisableMempoolSync: true, Blockbook logs this error on startup and repeatedly attempts to resubscribe.This was already fixed for
bsc_archive,polygon_archive, andbase_archivebut was missing on the remaining L2 coin configs.Add
"disableMempoolSync": trueto:optimism.jsonoptimism_archive.jsonbase.jsonarbitrum.jsonarbitrum_archive.jsonarbitrum_nova.jsonarbitrum_nova_archive.json