1. 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.

2. Wide range of uses Fast, efficient persistent objects (no SQL)
High-throughput replication (LSM trees)
Graph algorithms
Recoverable virtual memory
Transactional cluster hash table

3. LSN-Free Pages Novel variant of ARIES pages Recovery based on:
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