Event-driven Java you can trust.
Predictable.
Auditable.
Replayable.

Write your logic in Java. Fluxtion turns it into a single file that runs the same way every time — read it like ordinary source, replay it like a recording. Built for systems where the answer has to be defensible — from AI agents to regulated decisioning.

Fluxtion in 60 seconds — what it does and why it matters.

Inferred orchestration programming for Java

You write ordinary Java components and dependencies. Fluxtion works out when each part should run and generates readable Java you can trust.

  • Less orchestration to own — dispatch order, trigger propagation, lifecycle and audit hooks are generated source you can read, test and replay, not wiring held together in one developer's memory.
  • No runtime guesswork — an agent can help design the system, but the result runs as deterministic generated code with an executable graph you can audit and replay, not runtime LLM judgement.
  • Coordination cost paid once — most event-driven systems pay it at runtime, on every event; Fluxtion pays it at compile time.

With an AI agent, inferred orchestration becomes a production line for agentic software: the agent declares intent, and Fluxtion industrialises that intent into deterministic, inspectable software — instead of hand-stitching glue.

What is inferred orchestration programming?
How it works

The Fluxtion compiler runs at design time. Your system runs for free.

Design it once and sign it off — then run it anywhere, with nothing to meter.

How it works: pay to design, run for freeDesign and compile happen at design time — the step you pay for, per design. Compliance signs off the artefact before production. Then it runs anywhere, deterministically, free, with no per-run fee. Outcomes feed back into the next design.DESIGN TIME — YOU PAY HEREper designYou designdescribe the systemFluxtion compilesinto auditable JavaSIGN-OFFbefore prodSign-offcompliance approvesAGENT RUNTIME — FREERun anywheresame every time · freeAudit log review feeds back into the next design

You don't pay per call or per transaction at runtime — you pay to produce deterministic, signed-off behaviour, then own the running of it.

Why now

AI agents have hit the regulated-industry wall. Compliance functions reject non-deterministic systems. Fluxtion gives AI-authored logic the deterministic Java runtime enterprises can approve.

Read the full story — Lack of trust kills adoption
More than a Java backend

It runs in the browser — at server speed.

Fluxtion isn't just a Java backend. The same compiled logic runs in the browser, at the edge, and on your servers — one artefact, no rewrite. The demo below is it running natively in a phone's browser, with zero garbage collection. A real measurement, not a projection.

Live AOT — iPhone capture
2.75 M events / sec
Watch the 30-second demo
In the browser

Runs inside a web app — instantly, even offline. No server round-trip.

At the edge & on-device

Runs close to your data — on-prem or air-gapped. Nothing has to leave.

On the server

The standard backend, when that's what you want.

See it run in the browser
For compliance

AI-authored logic your auditor can read.

Four properties, all guaranteed at compile time, all readable from a single artefact:

  • Compile-time reachability. The graph the auditor reviews is the graph the runtime executes — proven structurally, not by inspection.
  • Per-event audit. Every event produces a structured record — node lifecycle, decision, output.
  • Structural policy enforcement. Forbidden tool-call paths cannot fire — gates are part of the topology, not runtime checks.
  • Byte-equal replay. Same input, same output. Always.
For architects

Compile your logic to an artefact that runs across JVM, server, edge and WASM.

Fluxtion is the logic layer above your messaging substrate. Mongoose, Kafka, Flink, Chronicle, Aeron are wires; Fluxtion is the logic the wires carry. Your business graph compiles ahead-of-time to a flat dispatcher with structural audit and deterministic replay built in. The artefact is a single, portable Java class that runs in any JVM.

Decoupling logic from runtime, runtime from transport, gives you permission to swap any layer without retraining the others. The cleavage is real and largely unowned: nobody else sells the deterministic logic layer above your messaging substrate, audited by construction.

For developers

Build a rule in 90 seconds.

Open the playground. Pick an example. Edit Java. Click Run. Click Audit — every event has a structured record. Click Replay — feed the captured events back through, get the same outputs from the same inputs. The audit and the replay are not features you wire up. They are properties the substrate guarantees.

Java you recognise. Compile-time graph analysis stays out of the way until you ask for it. JUnit tests run in the browser; the per-row run arrows and sentinel-driven status colours are the same surfaces you'd see locally — there is no second tool to learn.

Proof
Pharma dashboard

Four regulator-grade properties, one compiled artefact.

See it live
JUnit replay-equivalence

In-browser test suite proves byte-equal output across passes.

Run the test
Agent-governance capstone

Determinism, audit, structural policy, byte-equal replay — proven on a sample agent topology.

Open the example
How it works
Outcome
↑ Trustable, well-understood business logic
Surface
↑ Fluxtion playground + AI/human collaboration
Substrate
↑ Fluxtion logic substrate
Wires
Mongoose / Kafka / Flink / Chronicle / Aeron

Most event systems pay coordination cost at runtime. Fluxtion pays it at compile time. Your business logic compiles to a flat dispatcher with structural audit and deterministic replay built in. The artefact is the audit.

Read the technical documentation