Stasis flexible transaction layer
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Stasis: Flexible Transaction Layer. Modular xact system with careful APIs Reimplementation of ARIES from scratch User can add new operators Stasis ensures recovery/archive works Open source Not a DBMS; no SQL, no optimizer Very flexible buffering, logging, page formats, etc.

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Stasis: Flexible Transaction Layer

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Stasis flexible transaction layer

Stasis: Flexible Transaction Layer

  • Modular xact system with careful APIs

    • Reimplementation of ARIES from scratch

    • User can add new operators

    • Stasis ensures recovery/archive works

    • Open source

  • Not a DBMS; no SQL, no optimizer

  • Very flexible buffering, logging, page formats, etc.


Wide range of uses

Wide range of uses

  • Fast, efficient persistent objects (no SQL)

  • High-throughput replication (LSM trees)

  • Graph algorithms

  • Recoverable virtual memory

  • Transactional cluster hash table


Lsn free pages

LSN-Free Pages

  • Novel variant of ARIES pages

    • NO LSN on the page

    • Enable contiguous layout of large objects

    • Enables variable-sized pages

    • Solves the torn-page problem

    • Good fit for flash (no notion of blocks)

  • Recovery based on:

    • Conservative estimate of (missing) LSN

    • Roll forward of idempotent updates

      • OK to apply a redo twice


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