Commit Graph
2 Commits
Author SHA1 Message Date
david 9a322274a5 Segmented write-ahead log
Append-only WAL with CRC32-validated records, automatic segment rotation
at 128 MiB, background periodic fsync, and crash recovery by truncation
at the first corrupt or incomplete record.

Record format: type(1) | len(4) | payload | crc32c(4). Two payload
types: series (ref + labels) and samples (batch of ref/t/v). Fixed-width
encoding througout.

Torn-write harness truncates at every byte offset and asserts recovery
produces a valid prefix of the original sequnce, both single-segment and
multi-segment.

DESIGN.md, NOTICE.md, and README.md.
2026-07-04 14:09:09 -04:00
david 06a95597e9 chunkenc
Bitstream primitives (bstream) and XOR encoder/decoder following the
Prometheus TSDB variant of the Gorilla scheme. Delta-of-delta timestamps
with 14/17/20/64-bit buckets, XOR-compressed float64 values. Decoder is
total: arbitrary bytes produce values or ErrShortStream.
2026-07-04 11:42:06 -04:00