dragonboat v3.2 Release Notes
Release Date: 2020-03-05 // about 4 years ago-
⬆️ Dragonboat v3.2 comes with new features and improvements. All v3.1.x users are recommended to upgrade.
🆕 New features
- ➕ Added snappy compression support for Raft entires and snapshots.
- ➕ Added experimental witness support.
- ➕ Added new API to allow LogDB compaction to be manually triggered.
- ➕ Added event listener support to allow users to be notified for certain Raft events.
- ➕ Added system event listener support to allow users to be notified for certain system events.
- ➕ Added Raft related metrics to exported.
- ➕ Added rate limit support to control the maximum bandwidth used for snapshot streaming.
- ⚡️ Updated the C++ binding to cover all v3.1 features. Thanks JasonYuchen for working on that.
- ➕ Added a virtual filesystem layer to support more filesystem related tests.
- ➕ Added experimental Windows and FreeBSD support.
👌 Improvements
- ✂ Removed the restriction on max proposal payload size.
- 👍 Re-enabled the range delete support in LogDB.
- 👍 Better handling of concurrent snapshot streams.
- 🐎 Extensive testing have been done on a high performance native Go KV store called Pebble.
- 0️⃣ TolerateCorruptedTailRecords is now the default WAL recovery mode in the RocksDB based LogDB.
💥 Breaking changes
There is no breaking change for regular users. However,
- If you have built customized transport module implementing the raftio.IRaftRPC interface, there is minor change to the config.RaftRPCFactoryFunc type. See github.com/lni/dragoboat/config/config.go for details.
- The default transport module has been updated, it is no longer compatible with earlier versions of dragonboat.
- The default LogDB data format is no longer backward compactible with v3.1 or earlier.
Other changes
- LevelDB support has been marked as depreciated. It will be removed from dragonboat in the next major release.