v0.1.0 — initial standalone release

Embeddable, append-only topic log for Go — a single-node, disk-backed queue with per-consumer offsets. Zero external dependencies (Go standard library only). GPL-3.0-or-later.

Highlights

• Sharded, rotating binary log segments with CRC-checked frames; opt-in fixed-width record format (PayloadWidth) with O(1) cold-start load
• Prefix-consistent reads: a record is never visible while an earlier sequence is still buffered, so committing the highest sequence read is always safe; Durable(topic) marks the permanent-gap boundary
• Consumer offset commits with RegisterConsumer retention protection and observable data loss (TopicStat.Dropped)
• Retention by whole-segment deletion, per-topic/global byte caps, or never-expire archival mode (Retention: -1)
• Single-writer safety: exclusive directory lock (linux/darwin) plus a ReadOnly mode for inspecting a live directory
• Flush-failure containment: truncate-before-retry and MaxBufferBytes backpressure
• Zero-copy Scan/ScanAll, blocking ReadWait, compact binary wire encoding for transport
• cmd/scribe management/inspection CLI (version-stamped via build/scribe); examples for direct embedding, HTTP, Unix socket, and MCP

Docs

• User guide · Architecture · Operational plan · Examples

The internal/mmap package is derived from golang.org/x/exp/mmap and retains its BSD-3-Clause license.