Basekick-Labs/arc v26.03.1

Arc 26.03.1

on GitHub

Release Arc 2026.03.1

See RELEASE_NOTES_2026.03.1.md for full details.

Highlights

New Features:

• Backup & Restore API (async, selective restore, all storage backends)
• Line Protocol Bulk Import (POST /api/v1/import/lp) — one-command InfluxDB migration
• TLE (Two-Line Element) Ingestion & Import — native satellite orbital data support

Bug Fixes:

• Null handling in Line Protocol ingestion — missing fields stored as 0 instead of NULL (#202)
• Stale cache after compaction causes 404 errors (#204)
• Distributed cache invalidation for enterprise clustering (#204, #206)
• Generic query error messages — now returns actual DuckDB errors (#207)
• time_bucket/date_trunc returning per-second rows instead of buckets (#212)
• WAL recovery after flush failure replays already-flushed data (#218)
• Self-adjusting flush timer (#142)
• MQTT CleanSession now configurable, defaults to false (#239)
• Delete API partial failure reporting — HTTP 207 with failed_files (#235)
• Replication Prometheus metrics and sequence gap detection (#237)
• Orphaned hot file cleanup after tiering migration (#236)
• Compaction manifest cleanup leaves orphaned files (#240)
• Unified cache_httpfs TTLs and scaled cache sizes (#214)

Code Quality:

• Security: database name validation on all write endpoints (path traversal prevention)
• Security: backup restore file permissions fixed to 0600
• Fix: scheduler goroutine leak, MQTT subscription TOCTOU race, cluster router unbounded map growth
• Fix: LP precision parameter now honored (was silently ignored)
• Performance: pooled gzip decompression, single-pass LP unescape, single-pass SQL safety regex
• Cleanup: import handler and LP parser deduplication

Infrastructure:

• Go 1.26 (Green Tea GC, 30% faster cgo, 2x faster io.ReadAll)

Quick Start

Docker

docker run -d \
  -p 8000:8000 \
  -v arc-data:/app/data \
  ghcr.io/basekick-labs/arc:26.03.1

Debian/Ubuntu (amd64, arm64)

wget https://github.com/basekick-labs/arc/releases/download/v26.03.1/arc_26.03.1_amd64.deb
sudo dpkg -i arc_26.03.1_amd64.deb
sudo systemctl enable arc
sudo systemctl start arc
curl http://localhost:8000/health

RHEL/Fedora/Rocky (x86_64, aarch64)

wget https://github.com/basekick-labs/arc/releases/download/v26.03.1/arc-26.03.1-1.x86_64.rpm
sudo rpm -i arc-26.03.1-1.x86_64.rpm
sudo systemctl enable arc
sudo systemctl start arc

Kubernetes (Helm)

helm install arc https://github.com/basekick-labs/arc/releases/download/v26.03.1/arc-26.03.1.tgz

Download Artifacts

What's Changed

• fix(ingest): preserve null values for missing fields in line protocol… by @xe-nvdk in #203
• fix(compaction): invalidate caches after compaction to prevent 404 er… by @xe-nvdk in #205
• feat(compaction): distributed cache invalidation for enterprise clustering by @xe-nvdk in #206
• fix(api): return detailed DuckDB error messages in query responses by @xe-nvdk in #208
• feat(api): add Line Protocol bulk import endpoint for InfluxDB migration by @xe-nvdk in #209
• feat(api): add TLE ingestion and import for satellite orbital data by @xe-nvdk in #210
• perf(ingest): optimize TLE hot path with typed columnar bypass by @xe-nvdk in #211
• fix(query): use DuckDB integer division in time_bucket/date_trunc rewrites by @xe-nvdk in #213
• fix(query): unify cache_httpfs TTLs with s3_cache_ttl_seconds by @xe-nvdk in #215
• fix(query): unify cache_httpfs TTLs with s3_cache_ttl_seconds (#214) by @xe-nvdk in #216
• chore: upgrade to Go 1.26 by @xe-nvdk in #217
• fix(wal): purge old WAL files before recovery on flush failure by @xe-nvdk in #219
• fix(ingest): replace fixed ticker with self-adjusting timer for age-b… by @xe-nvdk in #222
• fix: consolidate compaction schedulers to prevent daily tier starvation by @xe-nvdk in #221
• Revert "fix: consolidate compaction schedulers to prevent daily tier starvation" by @xe-nvdk in #223
• fix(compaction): prevent orphaned files from manifest cleanup bugs by @xe-nvdk in #241
• feat(tiering): add orphaned hot file reconciliation after migration by @xe-nvdk in #242
• fix(tiering): log warning when hot backend unavailable for reconcilia… by @xe-nvdk in #244
• feat(replication): add Prometheus metrics and sequence gap detection by @xe-nvdk in #243
• fix(mqtt): make CleanSession configurable, default to false (#239) by @xe-nvdk in #247
• fix(api): report partial failure in delete response (#235) by @xe-nvdk in #248
• chore(deps): bump github.com/gofiber/fiber/v2 from 2.52.11 to 2.52.12 in the go_modules group across 1 directory by @dependabot[bot] in #250
• fix(quality): 26.03.1 code review — security, correctness, and elegance by @xe-nvdk in #251
• perf(api): replace regex with byte-loop in isValidDatabaseName() by @xe-nvdk in #252

Full Changelog: v26.02.2...v26.03.1