Raft orders.
MonsterFt uses standard, unmodified Raft to place every command in one sequence.
A LOCK HOST PROJECT / MONSTERFT
The second opinion
for every machine
decision.
MonsterFt is Lock Host’s integrity layer for Raft. It asks every available node to independently reproduce application results before they become cluster truth.
READ THE THESIS ↓Replication alone does not prove the answer is right.
A transient hardware fault can alter application state without crashing the machine. Traditional replication may keep serving that result. MonsterFt adds a deliberate checkpoint above Raft: order the work, run it independently, compare the database change and response, and accept only when enough nodes agree.
DESIGNED FOR THE FAILURE
THAT LEAVES NO STACK TRACE.
OUR RELIABILITY MODEL1
Even formally verified software can fail due to hardware.
ECC RAM / GOOGLE FIELD STUDY1 error
per 100
server-years
ECC RAM + MONSTERFT / MODELED RATE1 error
per 100 million
server-years
A MILLION-FOLD IMPROVEMENT IN THE MODELED RATE OF UNDETECTED ERRORS.
THE SYSTEM
02One command.
Independent witnesses.
SQLite records.
Each available node runs your application state machine inside a SQLite transaction and captures the resulting row changes as a patchset.
Nodes compare.
The patchset, ordered return value, and any stable application error must match.
The cluster corrects.
Nodes in the agreement quorum can restore a member that produced a different outcome.
THROUGHPUT PER CLUSTER2
Fast enough
for the work.
COMMANDS / SECOND
MONSTERFT.APPEND
COMMANDS / SECOND
MONSTERFT.APPENDBATCH
BATCH FOR SPEED — NOT A SHARED TRANSACTION
Every command in appendBatch() remains individually atomic and isolated, just as with append(). If one command fails, it rolls back independently; successful commands still commit.
THE PRODUCT MODEL
03Building for commercial deployment.
01 / OPEN SOURCE
Node.js
The Apache-licensed reference.
- Replicated SQLite state machine
- Outcome verification across nodes
- Atomic single + batch commands
- Application-owned transport
02 / COMMERCIAL
Rust + VFS
Proprietary and performant.
- Highest throughput
- C FFI for embedded systems
- Proprietary SQLite VFS collection
- Developer support included
THE FOUNDATION
04Small enough for the edge.
Serious enough for the mission.
Lock Host is joining the SQLite Consortium to support the database at the foundation of MonsterFt.
Lock Host’s proprietary VFS collection will be validated against SQLite’s private TH3 test suite.
EARLY PARTNERS / INVESTORS / ENGINEERS