Dreambox
Low-latency Java for high-frequency and high-throughput systems
We design and tune Java systems where microseconds and consistency matter, from market data pipelines to pricing and order flow.
Where latency comes from
Most latency problems in Java are not the language. They are GC pauses caused by allocation on hot paths, lock contention, thread hand-offs, blocking I/O, oversized queues and serialization overhead. Finding the real cause takes measurement, not guessing.
What we do
- Measure: latency percentiles, allocation profiles, GC logs, thread and lock analysis, flame graphs.
- Design for the hot path: allocation-aware data structures, single-writer patterns, bounded queues, back-pressure.
- Concurrency: multithreaded pipelines with clear ownership and no hidden shared state.
- Network and I/O: Netty, ZeroMQ, Vert.x and WebSocket transports, batching, framing and reconnection.
- Runtime: JVM and GC configuration chosen from measurements.
Experience behind it
Our team has built market data feeds, liquidity aggregation and tick storage for trading platforms, and runs the Finopts framework, which is designed for high-frequency trading and feed aggregation. Read more on trading platform development.
Engage us
A focused performance audit is a good first step: we measure your system, report the main contributors and fix them with your team, or embed engineers for longer work.
Frequently asked questions
What does low-latency Java mean in practice?
Predictable, short response times on the critical path. It is less about raw speed and more about removing jitter: GC pauses, lock contention, allocation on hot paths, slow I/O and unbounded queues.
Is Java suitable for high-frequency trading?
Java is widely used in trading systems when the code is written for it: allocation-aware, with controlled threading and tuned GC. We would tell you honestly if your latency target calls for something else, such as hardware or native components.
Can you tune an existing system?
Yes. We start by measuring (latency percentiles, allocation, GC, thread dumps, flame graphs) and fix the biggest contributors first.
Which Java version and GC do you use?
It depends on targets. Current Java 21 with G1 or ZGC suits many systems; stricter targets call for different measures. We decide from measurements, not preference.
Do you also build the messaging layer?
Yes. See Java messaging and event-driven systems.
More on Java engineering
Tell us about your Java project.
Describe the system, the problem and the team you need. You get a direct reply from an engineer, not a sales queue.