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Comparison · Infra & APIs

Dragonfly vs Gatekeeper

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

Dragonfly vs Gatekeeper: at a glance

FeatureDragonflyGatekeeper
SectorInfra & APIsInfra & APIs
Velocity score5.02.5
Sparks · 30d00
Top themesin-memory datastore, observability, replication, clusteringkubernetes policy, policy distribution, validatingadmissionpolicy, cel
Last editorial update1h ago3mo 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 Gatekeeper?

Gatekeeper grew a package manager for policies — and a benchmark to prove they are not too slow.

3.22.0-rc.0 in February introduced two CLI subcommands that change how policies are handled rather than what they express: gator policy, a brew-inspired tool for discovering, installing, upgrading and uninstalling policies from the gatekeeper-library, and gator bench, which benchmarks Rego and CEL engines with latency percentiles, throughput, memory profiling and baseline comparison for CI regression detection. The same release enabled sync-vap-enforcement-scope by default and gave both CEL and Rego access to namespace context during admission and audit. Since then, 3.23.0-rc.1 added status resource routing for remote cluster mode, and 3.24.0-beta.0 made generated ValidatingAdmissionPolicy output deterministic to stop a reconcile loop.

Read the full Gatekeeper trajectory →

Dragonfly vs Gatekeeper: 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.

G
Gatekeeper
INFRA · APIS
2.5

Gatekeeper grew a package manager for policies — and a benchmark to prove they are not too slow.

◆ Current state

3.22.0-rc.0 in February introduced two CLI subcommands that change how policies are handled rather than what they express: gator policy, a brew-inspired tool for discovering, installing, upgrading and uninstalling policies from the gatekeeper-library, and gator bench, which benchmarks Rego and CEL engines with latency percentiles, throughput, memory profiling and baseline comparison for CI regression detection. The same release enabled sync-vap-enforcement-scope by default and gave both CEL and Rego access to namespace context during admission and audit. Since then, 3.23.0-rc.1 added status resource routing for remote cluster mode, and 3.24.0-beta.0 made generated ValidatingAdmissionPolicy output deterministic to stop a reconcile loop.

◆ Where it's heading

The centre of gravity is moving from the admission controller to the tooling around it. Policies are becoming artefacts you install from a library at a version, benchmark against a baseline in CI, and test before they reach a cluster — which is the lifecycle application code already has and policy generally has not. Underneath, the ValidatingAdmissionPolicy path keeps maturing as Gatekeeper hands more enforcement to the Kubernetes-native mechanism it now generates.

◆ Prediction

Remote cluster mode gained status routing but the entries describe only that piece, so how far multi-cluster enforcement extends is unclear from these notes. The releases in this window are all beta and release candidates, so a 3.24.0 stable is the near-term milestone.

Alternatives to Dragonfly and Gatekeeper

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 Gatekeeper.

See all Dragonfly alternatives → · See all Gatekeeper alternatives →

Recent activity from Dragonfly and Gatekeeper

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

  1. 1d agoDragonflyDragonfly 2.1.0 exports snapshot and replica-disconnect metrics
  2. 6d agoDragonflyi2.0.6: faster slot info lookups in cluster mode
  3. 15d agoDragonflyi1.40.13: Sidekiq queues placed on the same shard
  4. 15d agoDragonflyi2.0.5: Fibonacci hashing evens out slot-based sharding
  5. 15d agoDragonflyi1.40.12: single-shard BLMOVE completes in one hop
  6. 15d agoDragonflyi2.0.4: slot migration no longer drops writes to empty buckets
  7. 3mo agoGatekeeperDeterministic VAP generation stops a reconcile loop
  8. 4mo agoGatekeeperStatus routing for remote cluster mode; mutation ApplyTo operations
  9. 7mo agoGatekeeperCI and dependency updates only
  10. 8mo agoGatekeepergator policy and gator bench: policy as an installable, benchmarked artefact ⚡

Frequently asked questions

What is the difference between Dragonfly and Gatekeeper?

They serve adjacent needs but don't currently overlap on shipped themes. Dragonfly is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Dragonfly better than Gatekeeper?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Dragonfly is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. 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 Gatekeeper?

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