ManageEngine Log360
Log360's September build fixes the migration to the unified console.
Comparison · Analytics
Fluent Bit vs Apache HertzBeat
A side-by-side editorial comparison of Fluent Bit and Apache HertzBeat — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:observability
Fluent Bit vs Apache HertzBeat: at a glance
What is Fluent Bit?
Fluent Bit spends October bounding what its inputs will accept.
Fluent Bit's last three 5.1 releases are mostly hardening. 5.1.3 validates OTLP log protobuf depth and fixes out_s3 heap corruption; 5.1.4 limits OTLP gRPC decompression and budgets msgpack objects on forward input; 5.1.5 bounds MessagePack reads into Lua and mitigates CRLF injection in HTTP headers. Features still land between them, including protobuf for the Kafka schema registry, a CRL file option for TLS and Chronicle API support. 5.0.x is taking backports only.
What is Apache HertzBeat?
HertzBeat's 1.9.0 is on its second release candidate, and the feed still skips 1.8.0.
HertzBeat's tracked entries are mostly release candidates. v1.9.0-rc1 in July split hertzbeat-common into core and Spring modules and carried monitoring template fixes and internationalization work. v1.9.0-rc2 in September is titled only by its one visible change, a fix that makes the Windows native collector start. The 1.8.0 release referenced in rc1's own notes never appears in the feed.
Fluent Bit vs Apache HertzBeat: editorial side-by-side
Fluent Bit
5.0ANALYTICS
Fluent Bit spends October bounding what its inputs will accept.
◆ Current state
Fluent Bit's last three 5.1 releases are mostly hardening. 5.1.3 validates OTLP log protobuf depth and fixes out_s3 heap corruption; 5.1.4 limits OTLP gRPC decompression and budgets msgpack objects on forward input; 5.1.5 bounds MessagePack reads into Lua and mitigates CRLF injection in HTTP headers. Features still land between them, including protobuf for the Kafka schema registry, a CRL file option for TLS and Chronicle API support. 5.0.x is taking backports only.
◆ Where it's heading
The pattern has shifted from the depth-first feature work on GCS and eBPF in August and September to input safety across the agent. The mitigations cover many separate plugins rather than one bad component, which reads as a systematic audit of untrusted data paths. Fluent Bit sits on the path of data it does not control, which is where a collector's risk lies.
◆ Prediction
Expect further releases on the same pattern, mixing mitigations with connector additions. The eBPF trace expansion noted earlier does not appear in these notes, so its next step is unclear.
Apache HertzBeat
0.0ANALYTICS
HertzBeat's 1.9.0 is on its second release candidate, and the feed still skips 1.8.0.
◆ Current state
HertzBeat's tracked entries are mostly release candidates. v1.9.0-rc1 in July split hertzbeat-common into core and Spring modules and carried monitoring template fixes and internationalization work. v1.9.0-rc2 in September is titled only by its one visible change, a fix that makes the Windows native collector start. The 1.8.0 release referenced in rc1's own notes never appears in the feed.
◆ Where it's heading
The 1.9.0 cycle is moving slowly, about seven weeks between candidates, and the rc2 fix points at native collector builds as current work. The release record stays thin, so most of what changes has to be read from the repository.
◆ Prediction
A 1.9.0 final or a further candidate is the next likely entry; nothing in the feed suggests timing.
Alternatives to Fluent Bit and Apache HertzBeat
Other Analytics 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 Fluent Bit or Apache HertzBeat.
Deepnote
Deepnote's agent now runs from first prompt to finished notebook without handoffs.
Apache Storm
Storm 3.1 adds an Iceberg sink and closes a long list of security gaps in Nimbus and the UI.
OpenPanel
OpenPanel moves from 3.18 to 3.20 in two days, still without a word of release notes.
Apache TsFile
TsFile 2.5 adds Go to its Java, C++ and Python implementations.
Glances
After a year of CVE fixes, Glances 4.5.7 turns to making its alerts tell the truth.
See all Fluent Bit alternatives → · See all Apache HertzBeat alternatives →
Recent activity from Fluent Bit and Apache HertzBeat
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 12d agoFluent Bit5.1.5 bounds Lua reads and mitigates CRLF header injection
- 17d agoFluent Bit5.1.4 limits OTLP decompression and msgpack unpacking
- 24d agoFluent Bit5.0.11: winevtlog crash fix and Kafka packaging backports
- 1mo agoFluent Bit5.1.3: Kafka protobuf schemas, TLS CRL files, S3 crash fix
- 1mo agoApache HertzBeatv1.9.0-rc2 fixes Windows native collector startup
- 1mo agoFluent BitFluent Bit 5.1.2: GCS Parquet compression and WIF support
- 1mo agoFluent BitFluent Bit 5.0.10: maintenance backports
- 3mo agoApache HertzBeatCommon module split into core and Spring; i18n work lands
- 1y agoApache HertzBeatDocs update and Apache graduation blog post
- 1y agoApache HertzBeatVersion bump candidate with no recorded changes
- 1y agoApache HertzBeatCandidate tag containing only a branch merge
Frequently asked questions
What is the difference between Fluent Bit and Apache HertzBeat?
Both compete on the same themes — observability — within Analytics. Fluent Bit is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Fluent Bit better than Apache HertzBeat?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fluent Bit is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to Fluent Bit?
Top Fluent Bit alternatives in Analytics are ranked by recent ship velocity. Browse the "Fluent Bit alternatives" section above for the current picks, or visit /alternatives/fluent-bit for the full list with editorial commentary on each.
What are the best alternatives to Apache HertzBeat?
Top Apache HertzBeat alternatives in Analytics are ranked by recent ship velocity. Browse the "Apache HertzBeat alternatives" section above for the current picks, or visit /alternatives/hertzbeat for the full list with editorial commentary on each.