The 0.3.29 release of content-node adds support for syncing just the diff during nodesync. Previously the entire user state was synced over, making syncs very inefficient. In addition, there were a few modifications to read only mode like return error status codes in /health_check/, /health_check/ipfs and /version.
Full Changelog:
[d381e72] - Bump .version.json to v0.3.29 (#1199)
[7142be3] - Diffed Sync (#1060)
[18cd28e] - Revert "[AUD-150] Fix nested data calls in content node (nodesync and snapback), identity (notifs), discovery node (ipfs_peer_info) (#1189)" (#1197)
[1bcff55] - [AUD-150] Fix nested data calls in content node (nodesync and snapback), identity (notifs), discovery node (ipfs_peer_info) (#1189)
[130feda] - Modify the content node health check to fail on read only mode (#1183)
[61162b1] - Return bad request for /version in read only mode (#1181)
[f8b9746] - Turn off ipfs health check in read only mode (#1178)