The always-on expectation
Customers expect a payment to work at any hour. A few minutes of downtime during a busy period can mean thousands of failed transactions and a flood of complaints. Fintech platforms therefore design for continuous availability.
Active-active architecture
Rather than keeping a cold standby, many platforms run two or more data centers that share live traffic. If one has a problem, the other carries the load. This requires the sites to stay closely synchronised.
Why the link is critical
Distributed databases and transaction systems exchange messages constantly to keep data consistent. Latency and jitter on the link between sites directly affect transaction times. Packet loss can trigger timeouts and failovers.
Private DC-to-DC circuits provide the stable, low-latency path these systems need.
Designing for resilience
- Two or more links over physically diverse routes.
- Automatic failover tested regularly.
- Clear monitoring of latency, loss and utilisation.
- Capacity headroom for traffic shifts during incidents.
Compliance support
Regulators expect payment systems to demonstrate resilience. Documented network architecture, monitoring records and DR test results all help.
