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Comparison · Analytics
Fluent Bit vs Apache Storm
A side-by-side editorial comparison of Fluent Bit and Apache Storm — release velocity, themes, recent moves, and the top alternatives to consider.
Fluent Bit vs Apache Storm: 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 Storm?
Storm 3.1 adds an Iceberg sink and closes a long list of security gaps in Nimbus and the UI.
Storm runs a 3.x line, started in July with 3.0.0's removal of all Clojure and a Java 21 baseline, alongside 2.8.x maintenance. 3.1.0 on September 12 adds a storm-iceberg module with an Apache Iceberg sink bolt and a setting to control JSONP wrapping, and spends most of its notes on hardening: log listings filtered by user permission, jar locations restricted to the Nimbus inbox, blobstore names confined to topology directories, TLS peer verification for worker connections and required Kryo class registration.
Fluent Bit vs Apache Storm: 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 Storm
0.0ANALYTICS
Storm 3.1 adds an Iceberg sink and closes a long list of security gaps in Nimbus and the UI.
◆ Current state
Storm runs a 3.x line, started in July with 3.0.0's removal of all Clojure and a Java 21 baseline, alongside 2.8.x maintenance. 3.1.0 on September 12 adds a storm-iceberg module with an Apache Iceberg sink bolt and a setting to control JSONP wrapping, and spends most of its notes on hardening: log listings filtered by user permission, jar locations restricted to the Nimbus inbox, blobstore names confined to topology directories, TLS peer verification for worker connections and required Kryo class registration.
◆ Where it's heading
After the 2.8.6 and 2.8.7 CVE releases, the 3.x line is closing access-control gaps across Nimbus, the logviewer and worker transport. The Iceberg sink adds a direct path into lakehouse storage.
◆ Prediction
Expect 3.1.x follow-ups, possibly with security advisories for the hardened paths, and continued 2.8.x maintenance; whether more lakehouse connectors follow is unclear.
Alternatives to Fluent Bit and Apache Storm
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 Storm.
Deepnote
Deepnote's agent now runs from first prompt to finished notebook without handoffs.
Apache HertzBeat
HertzBeat's 1.9.0 is on its second release candidate, and the feed still skips 1.8.0.
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 Storm alternatives →
Recent activity from Fluent Bit and Apache Storm
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 StormStorm 3.1.0 adds an Iceberg sink and security hardening
- 1mo agoFluent BitFluent Bit 5.1.2: GCS Parquet compression and WIF support
- 1mo agoFluent BitFluent Bit 5.0.10: maintenance backports
- 3mo agoApache StormStorm 3.0 drops Clojure entirely and moves to Java 21 ⚡
- 3mo agoApache Storm2.8.9 is a dependency sweep with one Flux viewer guard
- 3mo agoApache Storm2.8.8 backports a Kafka topology-lag fix
- 6mo agoApache StormTwo TLS CVEs fixed: JVM-wide downgrade and auth bypass
- 6mo agoApache StormDeserialization RCE and stored XSS in the UI are fixed
Frequently asked questions
What is the difference between Fluent Bit and Apache Storm?
They serve adjacent needs but don't currently overlap on shipped themes. 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 Storm?
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 Storm?
Top Apache Storm alternatives in Analytics are ranked by recent ship velocity. Browse the "Apache Storm alternatives" section above for the current picks, or visit /alternatives/storm for the full list with editorial commentary on each.