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Comparison · Infra & APIs

Dragonfly vs Incus

A side-by-side editorial comparison of Dragonfly and Incus — release velocity, themes, recent moves, and the top alternatives to consider.

Dragonfly vs Incus: at a glance

FeatureDragonflyIncus
SectorInfra & APIsInfra & APIs
Velocity score5.05.0
Sparks · 30d00
Top themesin-memory datastore, observability, replication, clusteringcontainer manager, live migration, sr-iov, project isolation
Last editorial update1h ago3d ago
WebsiteVisit →Visit →

What is Dragonfly?

Dragonfly opens a 2.1 line with metrics that explain why replicas drop.

Dragonfly tagged v2.1.0 on November 4, exporting snapshot counters, a save-in-progress gauge and replica disconnects labeled closed, error or timeout. Before, a replica dropped for stalling was indistinguishable from one whose connection simply closed. The 1.40 and 2.0 lines keep getting small cluster-mode fixes, including faster GetSlotInfo and slot migration that no longer drops writes.

Read the full Dragonfly trajectory →

What is Incus?

Incus 7.6 fixes 18 security issues, eight critical, and adds SR-IOV NIC live migration

Incus 7.6, released October 30, carries 18 security fixes, eight rated critical, many of them about restricted projects reaching the default project or the host, plus an authentication bypass through unverified client certificate chains. Its features aim at larger environments: live migration for VMs using SR-IOV NICs, multifd for VM live migration, cluster healing options, compression for block volumes, and OIDC opaque tokens. 7.5 before it added live migration between projects, cluster metrics and NVIDIA GPU cliques. The 7.0 LTS branch received a second patch, 7.0.2, with no described changes.

Read the full Incus trajectory →

Dragonfly vs Incus: editorial side-by-side

D
Dragonfly
INFRA · APIS
5.0

Dragonfly opens a 2.1 line with metrics that explain why replicas drop.

◆ Current state

Dragonfly tagged v2.1.0 on November 4, exporting snapshot counters, a save-in-progress gauge and replica disconnects labeled closed, error or timeout. Before, a replica dropped for stalling was indistinguishable from one whose connection simply closed. The 1.40 and 2.0 lines keep getting small cluster-mode fixes, including faster GetSlotInfo and slot migration that no longer drops writes.

◆ Where it's heading

Dragonfly is maturing for production operations: the 2.0 line fixed cluster correctness, and 2.1 starts by making replication and persistence observable from Prometheus. The project says it prefers small incremental features, so 2.1 will likely grow the same way.

◆ Prediction

More metrics and cluster-mode fixes on 2.1, with 1.40 and 2.0 still getting backports for a while.

I
Incus
INFRA · APIS
5.0

Incus 7.6 fixes 18 security issues, eight critical, and adds SR-IOV NIC live migration

◆ Current state

Incus 7.6, released October 30, carries 18 security fixes, eight rated critical, many of them about restricted projects reaching the default project or the host, plus an authentication bypass through unverified client certificate chains. Its features aim at larger environments: live migration for VMs using SR-IOV NICs, multifd for VM live migration, cluster healing options, compression for block volumes, and OIDC opaque tokens. 7.5 before it added live migration between projects, cluster metrics and NVIDIA GPU cliques. The 7.0 LTS branch received a second patch, 7.0.2, with no described changes.

◆ Where it's heading

Live migration is still the through-line: 7.4 made it near-live for dependent disks, 7.5 took it across projects, and 7.6 extends it to VMs using SR-IOV NICs. The other thread is multi-tenancy under scrutiny. The size of the 7.6 security batch, with several critical items in project isolation, shows that restricted projects are now being tested as a real boundary, and the release adds a build and threat model for Anthropic's OSS Scanner.

◆ Prediction

Expect a 7.6.x patch or further security fixes, because the project-isolation findings cover a wide surface. The monthly feature cadence should continue with more live-migration throughput work, given multifd and the throughput improvements in this release.

Alternatives to Dragonfly and Incus

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Dragonfly or Incus.

See all Dragonfly alternatives → · See all Incus alternatives →

Recent activity from Dragonfly and Incus

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoDragonflyDragonfly 2.1.0 exports snapshot and replica-disconnect metrics
  2. 5d agoIncus18 security fixes, SR-IOV NIC live migration and multifd
  3. 6d agoDragonflyi2.0.6: faster slot info lookups in cluster mode
  4. 15d agoDragonflyi1.40.13: Sidekiq queues placed on the same shard
  5. 15d agoDragonflyi2.0.5: Fibonacci hashing evens out slot-based sharding
  6. 15d agoDragonflyi1.40.12: single-shard BLMOVE completes in one hop
  7. 15d agoDragonflyi2.0.4: slot migration no longer drops writes to empty buckets
  8. 19d agoIncusSecond patch on the 7.0 LTS branch
  9. 1mo agoIncusLive migration across projects, cluster metrics, NVIDIA GPU cliques
  10. 2mo agoIncusIncus 7.4 adds near-live migration and Secure Boot key management ⚡
  11. 3mo agoIncusNative Windows and macOS installers; QMP command timeouts
  12. 3mo agoIncusFirst patch release on the 7.0 LTS branch

Frequently asked questions

What is the difference between Dragonfly and Incus?

They serve adjacent needs but don't currently overlap on shipped themes. Dragonfly and Incus are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Dragonfly better than Incus?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Dragonfly and Incus are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to Dragonfly?

Top Dragonfly alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Dragonfly alternatives" section above for the current picks, or visit /alternatives/dragonfly for the full list with editorial commentary on each.

What are the best alternatives to Incus?

Top Incus alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Incus alternatives" section above for the current picks, or visit /alternatives/incus for the full list with editorial commentary on each.