Plugging Consistency Into Legacy Trading Architecture

The most common objection we hear from prospective clients is: "This sounds great, but we cannot rip out and replace our existing infrastructure." We agree — and we built Synciro specifically so that you do not have to.

Our integration model is based on lightweight adapters that sit alongside existing systems and participate in the Synciro coordination protocol without modifying the systems themselves. There are three primary patterns.

Pattern one: event tapping. For systems that publish events to a message bus (Kafka, Solace, TIBCO), we deploy a Synciro adapter that subscribes to the relevant topics, extracts state-change information, and feeds it into the synchronization engine. The existing system is unaware of Synciro's presence; it continues to publish events exactly as before. This pattern is ideal for read-heavy use cases like global position aggregation and cross-region risk monitoring.

Pattern two: sidecar proxy. For systems that communicate via request-response APIs (REST, gRPC, FIX), we deploy a Synciro sidecar that intercepts outbound requests, enriches them with consistency metadata, and ensures that the receiving system processes them in causal order. This pattern is well-suited for order routing and execution workflows where ordering matters.

Pattern three: dual-write reconciliation. For systems that write to a database, we deploy a change-data-capture adapter that reads the database's write-ahead log and feeds changes into the synchronization engine. This pattern requires no code changes whatsoever and is our fastest path to integration — most clients are live within two weeks.

In all three patterns, the existing systems continue to operate exactly as they did before. Synciro adds a coordination layer on top, providing the consistency guarantees that the original architecture lacked. Clients adopt one pattern at a time, prove value on a single workflow, and expand incrementally.