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- WAL logging is eliminated as Storage component in general should integrate with new replication component (IEP-61) and reuse its replication log as an analogue of WAL log from 2.x.
- Single physical partition file on disk is replaced with a set of files: main "partition" file and several smaller files with incremental modifications to main file. This will allow to simplify checkpointing algorithm and also help to get rid of binary recovery phase.
RocksDB
RocksDB [2] is an LSM-based K-V database that should provide better performance on write-intensive workloads and should be easy to integrate for quick start.
In-memory storages
For in-memory storages we can consider both heap and off-heap solutions, including porting Page Memory without persistence support.
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- https://github.com/apache/ignite-3/blob/ignite-14647/modules/vault/README.md
- https://rocksdb.org/