← Back to home
Comparison · Infra & APIs

Fluentd vs Apache ShenYu

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

Fluentd vs Apache ShenYu: at a glance

FeatureFluentdApache ShenYu
SectorInfra & APIsInfra & APIs
Velocity score5.05.0
Sparks · 30d00
Top themeslog-collector, ruby-4, in-tail-performance, dependency-cleanupapi-gateway, ai-proxy, mcp, token-limiting
Last editorial update1h ago6h ago
WebsiteVisit →Visit →

What is Fluentd?

Fluentd 1.20 drops its yajl dependency to keep building on Ruby 4.1

Fluentd shipped 1.20.0 and 1.20.1 on the same day in late October. 1.20.0 replaces yajl with Ruby's built-in JSON, adds opt-in threaded parsing and directory watching to in_tail, a command timeout for in_exec, TCP keepalive for out_forward, a umask option and a cap on evacuated buffer chunks. 1.20.1 removed yajl-ruby from runtime dependencies because it cannot build on Ruby 4.1, so plugins that require it must now declare it themselves. 1.19.4 in September fixed buffer accounting leaks, a path traversal check and syslog limits.

Read the full Fluentd trajectory →

What is Apache ShenYu?

ShenYu's AI gateway plugins are back in motion, with 2.7.2 candidate tags in October.

Apache ShenYu's feed resumed on 28 October with two 2.7.2 release-candidate tags that carry only Maven plugin messages. GitHub shows a 2.7.1 release on 8 July that the feed missed, with MCP server URL fixes, test-determinism fixes and gateway refactors. The release history also shows a set of AI plugins growing alongside the traditional gateway ones: an AI proxy, a token-based limiter, a request transformer and an MCP server plugin.

Read the full Apache ShenYu trajectory →

Fluentd vs Apache ShenYu: editorial side-by-side

F
Fluentd
INFRA · APIS
5.0

Fluentd 1.20 drops its yajl dependency to keep building on Ruby 4.1

◆ Current state

Fluentd shipped 1.20.0 and 1.20.1 on the same day in late October. 1.20.0 replaces yajl with Ruby's built-in JSON, adds opt-in threaded parsing and directory watching to in_tail, a command timeout for in_exec, TCP keepalive for out_forward, a umask option and a cap on evacuated buffer chunks. 1.20.1 removed yajl-ruby from runtime dependencies because it cannot build on Ruby 4.1, so plugins that require it must now declare it themselves. 1.19.4 in September fixed buffer accounting leaks, a path traversal check and syslog limits.

◆ Where it's heading

The project is clearing old native dependencies ahead of new Ruby versions while making in_tail cheaper at high file counts. The hardening theme from 1.19.3 and 1.19.4 continues in the buffer and input paths.

◆ Prediction

Expect 1.20.x patches driven by plugins that break without yajl-ruby, since 1.20.1 pushes that dependency onto plugin authors.

A
Apache ShenYu
INFRA · APIS
5.0

ShenYu's AI gateway plugins are back in motion, with 2.7.2 candidate tags in October.

◆ Current state

Apache ShenYu's feed resumed on 28 October with two 2.7.2 release-candidate tags that carry only Maven plugin messages. GitHub shows a 2.7.1 release on 8 July that the feed missed, with MCP server URL fixes, test-determinism fixes and gateway refactors. The release history also shows a set of AI plugins growing alongside the traditional gateway ones: an AI proxy, a token-based limiter, a request transformer and an MCP server plugin.

◆ Where it's heading

ShenYu is positioning as a gateway for model traffic as well as service traffic. The AI plugins appear first as features and then as bug reports a release later, which is what real use looks like, and token-based rate limiting matches how LLM providers bill. The apparent eight-month silence was a feed gap, not a stall.

◆ Prediction

Expect 2.7.2 final soon after the candidate tags, likely with more MCP server plugin fixes. The tags carry no notes, so its contents can't be judged yet.

Alternatives to Fluentd and Apache ShenYu

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 Fluentd or Apache ShenYu.

See all Fluentd alternatives → · See all Apache ShenYu alternatives →

Recent activity from Fluentd and Apache ShenYu

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

  1. 4d agoApache ShenYu2.7.2 release-candidate tag (no notes)
  2. 4d agoApache ShenYuEarlier 2.7.2 candidate tag (no notes)
  3. 7d agoFluentdFluentd 1.20.1 drops yajl-ruby so it builds on Ruby 4.1
  4. 7d agoFluentdFluentd 1.20: threaded in_tail parsing, directory watching, umask
  5. 1mo agoFluentdFluentd 1.19.4 fixes buffer leaks and a path traversal check
  6. 4mo agoFluentdPayload size limits, host validation and tag path boundaries
  7. 8mo agoFluentdConnection timeouts, socket leaks and Ruby 4.0 dependencies
  8. 10mo agoFluentdBackport fixes out_forward stalling under TLS
  9. 11mo agoApache ShenYuMCP server plugin fixes and Nacos sync cache corrections
  10. 1y agoApache ShenYuAI request transformer plugin joins the proxy and token limiter
  11. 1y agoApache ShenYuJWT SPI extension and Dubbo method configuration land

Frequently asked questions

What is the difference between Fluentd and Apache ShenYu?

They serve adjacent needs but don't currently overlap on shipped themes. Fluentd and Apache ShenYu 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 Fluentd better than Apache ShenYu?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fluentd and Apache ShenYu 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 Fluentd?

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

What are the best alternatives to Apache ShenYu?

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