Single-node time-series storage engine

SEE WHAT HAPPENSBETWEEN WRITE AND DISK.

FjordTS is a Rust storage engine with a checksummed write-ahead log, ordered memtable, immutable day segments, and crash-aware recovery. This lab replays the exact state transitions used by its test fixtures.

SELECT TRACE

TRACE / WAL to day segment

Clean flush

Four points cross a durability boundary, then settle into one immutable day segment.

RATE

01 / DATA PATHEVENT 01 OF 07

FJWLWrite-ahead log0 FR / 0 B

B+Ordered memtable0 POINTS

FJSGDay segments0 FILES

[t?,t?]Range query0 ROWS

SEGMENT RACK / UTC DAY PARTITIONSMANIFEST G0

EMPTY / 1

EMPTY / 2

EMPTY / 3

EMPTY / 4

EMPTY / 5

BYTE FIELD / WAL.OPENCRC --------

WAL / FRAMES00

MEM / POINTS00

DISK / SEGMENTS00

RECOVERY / DROPPED0 B

CRC / ERRORS00

QUERY / ROWS00

THE ENGINE, NOT A MOCK API

CRC-framed WALAtomic manifest swapLast-write-wins mergeExclusive process lock

cargo test --all-targets