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Introduction

CrossDB is a ultra high-performance, lightweight embedded and server OLTP RDBMS. It is designed for high-performance scenarios where the main memory can hold the entire database.

Features

  • Supports multiple OS platforms: Linux, Windows, MacOS, FreeBSD, etc.
  • Supports multiple CPU architectures: X86, ARM, PPC, MIPS, etc.
  • Supports OnDisk, In-memory (IMDB), RamDisk, and Hybrid Storage.
  • Supports the standard RDBMS model.
  • Supports standard SQL and many extensions from MySQL.
  • Supports multiple databases.
  • Supports embedded and client-server modes (TBD).
  • Supports primary keys and multiple secondary indexes.
  • Supports HASH and RBTREE (TBD) indexes.
  • Supports multi-column indexes.
  • Supports exact match, leftmost match (TBD), and range match (TBD).
  • Supports standard ACID transactions.
  • Supports WAL for OnDisk storage (TBD).
  • Supports multiple threads and multiple processes access.
  • Supports table-level read-write locks.
  • Supports Reader-Writer MVCC (write transaction doesn't block read transactions).
  • Supports an embedded CrossDB shell with convenient auto-completion.
  • Supports multi-statement APIs.
  • Supports prepared statement APIs.
  • Ultra high performance.
  • Very simple: Simple header and library file.
  • Zero config: No complex configuration, truly out-of-the-box.

Use Cases

  • High-frequency trading (OLTP).
  • High-performance queries.
  • High-performance data management: Use CrossDB OnDisk DB to store data on HDD/SSD/Flash.
  • High-performance IMDB: Use CrossDB In-Memory DB to manage process runtime data, replacing STL or hand-written data structures.
  • Use CrossDB RamDisk DB to support process restartability and in-service software upgrades (ISSU) easily.
  • Use CrossDB as a super-fast cache DB.

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