Module storage

Expand description

Storage module — 5-Tier Hybrid Storage architecture.

All storage engines implement the StorageBackend trait. The SQL layer depends only on this trait (Dependency Inversion Principle).

Modules§

arrow_ipc: Arrow IPC Format Utilities
backup
cache: LRU Row Cache — Tier 2 Cache
columnar: Columnar Store — Arrow RecordBatch management.
columnar_cache: Columnar Cache — Tier 2: OLAP-optimized in-memory cache.
columnar_delta: Columnar Delta Store — MVCC-aware in-memory columnar buffer.
compression
delta_store: Delta Store — Tier 1: In-memory write buffer backed by SkipList and DashMap.
encryption
gpu: GPU Storage Layer — Optional acceleration using CUDA.
index: Bloom Filter Index — Tier 4 Index
kv_adapter: Integration layer between ColumnarDelta and SQL engine.
memory_wos: In-memory WOS backend using BTreeMap
parquet_io: Parquet I/O — Tier 5 (ROS) file operations.
versioned_batch: Versioned RecordBatch for MVCC Columnar Storage.
wos: WOS (Write-Optimized Store) — Tier 3: sled-backed durable row storage.