Trading Engine Read Replica
An algorithmic trading engine is a black box optimized to the microsecond: every query it services for monitoring, analytics, or downstream consumers steals cycles from the trade path, and in low-latency trading, cycles are money. 3forge sits in front of that engine as a read replica. It captures the engine's full data exhaust with negligible impact, then serves every adjacent system from the cache instead of the engine. The hot path stays untouched, and every consumer still gets the data it needs.
The Challenge
You Can't Query the Hot Path Without Paying for It
The engine is tuned to the microsecond, so any work it does to answer external requests, a risk system polling positions, a dashboard subscribing to fills, an analytics job pulling trades, competes with the trade path. The more systems that read from it directly, the more that hot path is taxed.
Performance is the product
In ultra-low-latency trading, microseconds shape fill quality and PnL, so load added for monitoring or data distribution comes straight off the edge.
Every consumer wants the same data
Risk, surveillance, reconciliation, dashboards, and analytics all need the engine's orders, fills, and positions, and pointing each at the engine concentrates load on the component least able to absorb it.
The engine is a black box
It is a hand-optimized C++ system that exposes data on its own terms, so adding query-serving or a database to its hot path runs counter to its design.
Many direct consumers
As each team connects straight to the engine in its own way, those dependencies grow harder to govern, throttle, or change without risk.
The 3forge Approach
A Read Replica That Absorbs the Load
3forge runs alongside the trading engine as a protective data layer. The engine emits its activity once, as a low-overhead exhaust (a multicast tap, a journal, or a fire-and-forget publish), and 3forge ingests it into real-time in-memory tables backed by the petabyte column store. Every adjacent system, risk, surveillance, reconciliation, dashboards, and analytics, then sources its data from 3forge instead of the engine. The 3forge Gateway exposes that data through virtually every access pattern those consumers already speak, so the engine fields exactly one consumer while everyone else is served at scale. The hot path is shielded, and the data is fresher and more queryable than the engine itself could make it.
Key Capabilities
What You Can Build with 3forge
Minimal-Impact Capture
Tap the engine's exhaust over multicast, a journal, or a one-way publish so ingestion adds negligible overhead and never blocks or back-pressures the trade path.
Real-Time Shadow Tables
Mirror the engine's orders, fills, and positions in in-memory tables that update at feed speed, giving every consumer a live, queryable copy of engine state.
Serve Every Access Pattern
Expose the same data through SQL, streaming subscriptions, REST, ODBC, and Python so each system keeps the interface it already uses, with no change to the engine.
One Consumer on the Engine
Collapse many direct dependencies into a single tap. The engine serves only 3forge, while fan-out to hundreds of consumers happens against the cache.
Historical Depth on Tap
Persist the exhaust to the petabyte historical database so backtesting, surveillance, and audit can query trillions of rows without ever touching the live engine.
Governed, Entitled Distribution
Apply entitlements, throttling, and audit at the Gateway so data distribution is controlled centrally instead of through ungoverned point-to-point links.
Get started
Protect the hot path. Free the data.
Book a 30-minute demo with a 3forge solutions engineer and see a read replica serving live engine data to every downstream system at once.