0xPolygon/bor v2.10.3 | Chain Release Info

Bor v2.10.3 has been released, focusing on security and stability improvements over v2.10.2. This is a non-breaking update with no hardfork or database changes, allowing for a seamless, rolling upgrade of nodes.

This version is the public release of `v2.10.3-priv`, which has already been running on most validator nodes and major RPC providers.

Key Highlights:

Drastically Faster Restarts: A major improvement to the storage trie preload mechanism can reduce node restart times from over an hour to just a few seconds. This is enabled via a new optional flag, `[cache] addresscachepersist`, which saves the address cache to disk (~9 GB on mainnet) for near-instant reloading.

Execution Engine Fixes:
- Resolves an issue in the parallel execution engine (BlockSTM V2) where balance reads could be incorrect across a `self-destruct` operation.
- Reduces memory usage for importers under heavy loads involving `keccak` or `ecrecover` operations.

Transaction Pool Enhancements:
- Introduces a new mechanism to automatically evict "stranded" transaction chains that have become unminable due to a low base fee. This is controlled by the new `txpool.strandedlifetime` setting, which defaults to 3 hours.

P2P Stability: Static peers are now more persistent and will be maintained across jails or when dynamic peer slots are full. They are also protected from the peer dropper.

Important Notes for Node Operators:

Check Heimdall Timeout: The `[heimdall] timeout` setting was previously ignored but is now honored. The default is `30s`. If your configuration has a lower value (e.g., `5s` from older templates), you should remove it or raise it to `30s` to avoid potential issues.

New Configuration Options:
- [txpool] strandedlifetime: Sets how long a pending chain can remain below the base fee before being evicted (Default: `3h`, `0` to disable).
- [cache] addresscachepersist: Persists the address cache to disk on shutdown for faster restarts (Default: `false`).

v2.10.3 is a security and stability release on top of `v2.10.2`. It's the public release of `v2.10.3-priv`, which most validators and major RPC providers already run.

No hardfork, no database schema change, no resync required. Nodes can be upgraded one at a time, in any order.

## Highlights

- **Execution**: parallel (BlockSTM V2) balance reads are resolved correctly across a self-destruct boundary (#2403). Shared block caches are size-capped and per-tx code hashes memoized, which lowers importer memory under heavy keccak / ecrecover load. Log counting while tracing no longer copies logs (#2460).
- **Txpool**: pending chains stranded behind a head that can't be mined are evicted after `txpool.strandedlifetime`. Filtered addresses also apply to SetCode (type 4) authorizations. The pool signer is no longer swapped when `allow-unprotected-txs` is set (#2464).
- **Storage trie preload**: segmented BFS queue for the preload, plus optional address-cache persistence across restarts. On a mainnet sentry, preload on restart drops from about 1h25m to about 4s.
- **P2P**: static peers stay dialed across jails and full dynamic slots (#2438), and are kept out of the peer dropper.
- **RPC**: the execution slot is re-acquired between batch items, and the RPC execution pool request timeout from config is applied.
- **Heimdall client**: the configured request timeout is now honored (#2411).
- **Go toolchain 1.26.8**.

## Operator notes

- **Check `[heimdall] timeout` / `--bor.heimdalltimeout`.** Before this release the value was ignored. It's now honored, and the default is `30s`. If your config sets a low value explicitly (older templates had `5s`), remove it or raise it to `30s` unless you need something else.
- **New config** (defaults are safe):
- `[txpool] strandedlifetime`: how long a pending head can stay below the base fee before its chain is evicted (default `3h`, `0` disables). On by default.
- `[cache] addresscachepersist`: persist the address-biased trie caches on shutdown and reload them on startup (default `false`). Needs disk space for the snapshot, about 9 GB on mainnet with the default cache sizes. The first restart after enabling it still does a cold preload. If the snapshot is missing, bor falls back to the normal preload.

## What's Changed
* v2.10.3 candidate by @marcello33 in https://github.com/0xPolygon/bor/pull/2492

**Full Changelog**: https://github.com/0xPolygon/bor/compare/v2.10.2...v2.10.3

Chain Releases

0xPolygon/bor - v2.10.3 New

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