Arbitrum Nitro v3.12.1 has been released, bringing several important updates and changes to the platform. One of the key additions is the introduction of new configuration options, including `node.feed.input.rest.enable`, `node.feed.input.rest.url`, and `node.feed.input.rest.timeout`. These options allow users to customize their feed settings and improve the performance of their nodes.
Another significant change is the ability of feed clients to fill gaps from the feed's REST backlog instead of the websocket backlog. This should improve the overall stability and reliability of the feed.
However, there is also a breaking change to stylus activation. By default, stylus activation is now refused for `eth_call` and `eth_estimateGas`. This change is intended to improve security and prevent potential exploits.
The release also includes several new metrics and commands for monitoring and managing the feed, including `arb/feed/backfill/runs`, `arb/feed/backfill/chunks`, `arb/feed/backfill/messages`, `arb/feed/backfill/chunks_missing`, `arb/feed/backfill/errors`, and `arb/feed/backfill/permanent_errors`. These metrics and commands will help users to better understand and manage their feed performance.
Overall, Arbitrum Nitro v3.12.1 is a significant release that brings several important updates and changes to the platform. Users are advised to review the release notes and update their nodes accordingly.
The release is available as a Docker Image on Docker Hub at `offchainlabs/nitro-node:v3.12.1-70fa99a`. Users can also use the `offchainlabs/nitro-node:v3.12.1-70fa99a-validator` image, which has the extra script `/usr/local/bin/split-val-entry.sh` as the entrypoint, for running a validator without a split validation server.
Arbitrum Nitro v3.12.1 is a significant step forward for the platform, and users can expect improved performance, security, and reliability from their nodes.