⚙️ April 2026: Hiero JSON-RPC Relay Default Configuration Changes — Improving Ethereum Compatibility
🚀📢 Developer Tool Interface Improvement Update
The update to Hiero JSON-RPC Relay v0.77.0, scheduled for release in April 2026, includes changes to several default settings. The purpose of these changes is to adjust the Hedera network to behave more like an Ethereum-style JSON-RPC environment, improving how Ethereum-based tools such as wallets, block explorers, and dApp backends function on Hedera.
⚙️📊 Key Changes
The following features will have their default settings changed:
• Enable Transaction Pool by default: Store and manage unprocessed transactions in memory
• Enable WebSocket subscriptions by default: Allow apps to receive network state changes in real-time
• Disable Redis by default: Redis-based features will not be used unless specifically configured
• Disable asynchronous transaction processing by default: Transaction processing will proceed sequentially by default
• Disable internal Relay rate limiting by default: Request rate limits can be managed by systems external to the Relay
🧠🔧 Reason for Changes
The Hiero JSON-RPC Relay acts as an interface that allows Hedera to be used like Ethereum. Since many development tools and services are already built based on the standard operating methods of Ethereum nodes, this update adjusts the default settings to ensure they function as expected.
📌👨💻 Impact on Users
• If you are already using specific configuration values, there will be no changes to your setup.
• If you were using the default settings, some behaviors may differ after the update.
🔎📈 Summary
This update focuses on aligning the Hedera development environment more closely with the Ethereum development environment rather than adding new features. This is expected to make it easier for developers to build and operate wallets, dApps, and infrastructure tools on Hedera.
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