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Fluent Bit

ANALYTICS
Velocity6.3

Lightweight telemetry and log processor and forwarder

fluentbit.io ↗

Fluent Bit 5.2 adds its own typed scripting language for log processing

observabilityloggingtyped-scriptingsecurity-hardeningopentelemetrybrowser-sdk
◆Current state
Fluent Bit 5.2.0 shipped on 9 November. Its main addition is Fluent Typed Scripting, a processor with reusable typed policy packs, JSON field decoding and editor definitions, alongside the experimental browser runtime, output throttling and YAML config generated from CLI flags. The release also carries dozens of input hardening fixes, from OTLP decoding limits to syslog overflow and an AWS credential URI bypass. Experimental browser SDK builds from master keep appearing several times a day, each marked as unsupported for production.
◆Where it's heading
After a month of hardening on 5.1, the 5.2 line puts new surface on top: a typed transform language that also runs in the browser build. Fluent Bit is moving from a collector configured with Lua snippets toward an agent with its own checked policy format.
◆Prediction
Expect 5.2.x patch releases soon fixing regressions in the new FTS processor, and more FTS policy packs; the browser SDK is likely to stay labelled experimental for now.

◆Recent moves

  1. 1d ago

    Experimental browser SDK build from master

    Another browser SDK build from master after 5.2.0, published with a validation run and no changelog. It shows the browser runtime is still built daily, not that anything changed for users.

    View source ↗
  2. 2d ago

    Experimental browser SDK build from master

    A post-5.2 browser SDK build that passed optimized and ASan validation. Like the others in the feed, it carries no notes and no production support promise.

    View source ↗
  3. 4d ago

    Experimental browser SDK build from master

    Another nightly-style browser SDK build from master that passed browser validation. It carries no notes and no support promise, so it matters only to people testing the browser runtime.

    View source ↗
  4. 5d ago

    Experimental browser SDK build from master

    One of several browser SDK builds published the same day. Useful as a sign the browser runtime is being exercised constantly, not as a release to adopt.

    View source ↗
  5. 5d ago

    Fluent Bit 5.2 adds typed scripting, browser runtime and throttling

    ⚡ SPARK

    5.2 turns the hardening work of the 5.1 line into a new feature release. Fluent Typed Scripting is the headline, and it is wired into the browser runtime that the experimental SDK builds have been testing.

    View source ↗
  6. 5d ago

    Experimental browser SDK build from master

    A pre-release browser SDK build cut hours before 5.2.0. It is part of the run-up that brought the browser runtime into the release.

    View source ↗