The latest articles on DEV Community by ITProLab Team (@itprolab_team). https://dev.to/itprolab_team https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3721703%2F9c72177a-6fde-4e29-b1cb-efe118e50e69.jpg https://dev.to/itprolab_team en ITProLab Team Wed, 21 Jan 2026 14:14:34 +0000 https://dev.to/itprolab_team/ethereum-node-is-not-enough-for-backend-work-5kd https://dev.to/itprolab_team/ethereum-node-is-not-enough-for-backend-work-5kd <h2> Practical Notes from Building ethbacknode </h2> <p>This article is a short technical note based on a real implementation.<br> We are not proposing a “better node” or a framework — just documenting an approach we built after repeatedly hitting the same problems with Ethereum JSON-RPC in backend systems.</p> <p>Repository:<br> <a href="https://github.com/ITProLabDev/ethbacknode" rel="noopener noreferrer">https://github.com/ITProLabDev/ethbacknode</a></p> <h2> Context </h2> <p>Ethereum nodes are good at:</p> <ul> <li>block execution</li> <li>state validation</li> <li>exposing JSON-RPC</li> </ul> <p>They are not designed to be used directly as backend components for:</p> <ul> <li>payment systems</li> <li>custodial flows</li> <li>service-to-service integrations</li> </ul> <p>Using a raw node as a backend dependency quickly creates operational gaps.</p> <h2> Problems We Hit in Practice </h2> <p><strong>1. Key Management</strong><br> JSON-RPC assumes the caller manages keys correctly.</p> <ul> <li>In real systems we needed:</li> <li>isolated keys per service</li> <li>controlled signing</li> <li>minimal exposure of private keys</li> </ul> <p>This logic always ended up living outside the node.</p> <p><strong>2. Transaction Lifecycle</strong><br> From a backend perspective, eth_sendRawTransaction is only the beginning.</p> <p>We had to track:</p> <ul> <li>submission</li> <li>pending state</li> <li>inclusion</li> <li>confirmation depth</li> <li>replacement / drop cases</li> </ul> <p>RPC does not provide lifecycle guarantees - only snapshots.</p> <p><strong>3. Monitoring and State</strong><br> Polling RPC endpoints does not give:</p> <ul> <li>deterministic transaction state</li> <li>internal consistency</li> <li>idempotent retries</li> </ul> <p>Backend systems require their own source of truth, not just chain data.</p> <h2> What ethbacknode Actually Is </h2> <p>ethbacknode is a <strong>stateful backend layer</strong> placed between:</p> <ul> <li>application code</li> <li>Ethereum JSON-RPC node</li> </ul> <p>It does <strong>not</strong> replace a node.<br> It wraps it with backend-oriented logic.</p> <h2> Key Architectural Choices </h2> <p><strong>Language: Go</strong><br> Chosen for:</p> <ul> <li>predictable concurrency</li> <li>long-running service behavior</li> <li>simple deployment</li> </ul> <h2> Embedded Storage </h2> <p>We intentionally use embedded storage instead of external DBs:</p> <ul> <li>fewer dependencies</li> <li>simpler ops</li> <li>easier reproducibility</li> </ul> <p>Trade-off: limited horizontal scalability (accepted).</p> <h2> IPC over HTTP (When Possible) </h2> <p>IPC is preferred for:</p> <ul> <li>lower latency</li> <li>fewer failure modes</li> <li>reduced attack surface</li> </ul> <p>HTTP remains available where IPC is not feasible.</p> <h2> What This Design Enables </h2> <ul> <li>explicit transaction states</li> <li>controlled signing flow</li> <li>backend-friendly APIs</li> <li>clearer failure handling</li> </ul> <h2> Where It Is Not a Fit </h2> <ul> <li>high-frequency trading</li> <li>horizontally scaled stateless services</li> <li>generic Web3 SDK usage</li> <li>smart contract orchestration frameworks</li> </ul> <p>These were conscious exclusions.</p> <h2> Open Questions </h2> <p>We are interested in <strong>technical critique</strong>, especially around:</p> <ul> <li>edge cases in tx lifecycle handling</li> <li>reorg scenarios</li> <li>alternative designs for state management</li> <li>failure modes we might be missing</li> </ul> <p>This is an open-source project, and feedback from engineers who’ve built Ethereum-backed systems is highly appreciated.</p> <p>GitHub:<br> <a href="https://github.com/ITProLabDev/ethbacknode" rel="noopener noreferrer">https://github.com/ITProLabDev/ethbacknode</a></p> ethereum opensource backend go