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Launching an online gaming or betting platform is not just a licensing and product challenge — it is an infrastructure challenge. A well-designed iGaming infrastructure stack determines whether your platform stays online during peak traffic, survives DDoS attacks, and scales as your player base grows. At HostingB2B we have spent over a decade building and managing enterprise iGaming hosting for gaming and betting companies across Cyprus, Malta, and other licensed jurisdictions. In this article, we break down a proven, open-source iGaming infrastructure stack for startups — layer by layer — so you can launch with enterprise-grade reliability without enterprise-grade licence fees.
Why Open Source Makes Sense for iGaming Startups
One lesson from 12+ years of running large enterprise networks: spending thousands on proprietary licence fees rarely improves uptime or productivity. What it does guarantee is that your IT budget becomes the first target whenever management looks for cuts.
For a startup, every euro matters. An open-source iGaming infrastructure stack — built on battle-tested projects like pfSense, HAProxy, Nginx, MySQL, and Nagios — delivers the same (often better) performance and availability, while keeping your operating costs predictable. The trade-off is expertise: open source demands a skilled team, which is exactly where a managed hosting partner comes in.
Layer 1: Network and Internet Redundancy
Every iGaming infrastructure stack starts with the network. Downtime is not an option when real money is on the line, so redundancy must be designed in from day one.
Our reference setup includes:
- Dual internet feeds from cross-connected ISPs, each with a guaranteed 99.93% uptime SLA — if one feed fails, traffic continues over the second without player-facing impact.
- Private VLANs on a 10G local network, keeping internal traffic between application, database, and game servers fast and isolated from the public internet.
- Bare-metal servers for the network layer, avoiding the noisy-neighbour risks of shared virtualisation at the most critical tier.
Layer 2: Routing and Firewalling with pfSense
For routing and firewalling, we recommend pfSense, built on FreeBSD. Its CARP (Common Address Redundancy Protocol) setup provides a high-availability firewall cluster on each internet feed — if the primary firewall node fails, the secondary takes over automatically.
For an iGaming startup, this means enterprise-class perimeter security and failover without proprietary firewall licence costs.
Layer 3: Load Balancing and First-Line DDoS Defence with HAProxy
HAProxy is the workhorse of the load-balancing layer in our iGaming infrastructure stack. It gives startups capabilities that would otherwise require expensive appliances:
- Horizontal scaling — add nodes to any service group as traffic grows, with no re-architecture.
- First-line DDoS protection — mitigation against TCP SYN floods and Slowloris-style attacks before they reach your web servers.
- SSL offloading — terminating TLS at the balancer reduces load on web servers and the rest of the infrastructure.
- ACL-based routing — direct traffic per subdomain or URL path to dedicated server groups (for example, separating casino, sportsbook, and payments traffic).
Layer 4: Web Servers — Nginx Tuned for iGaming Traffic
At the web tier, we deploy Nginx on Ubuntu, running as multiple balanced nodes in front of the platform servers.
Nginx fine-tuning is a critical, often-overlooked part of the iGaming infrastructure stack: by limiting connection counts, closing slow connections, and rate-limiting requests, it acts as a second line of defence against Layer 7 (HTTP) DDoS attacks — the type most commonly aimed at gaming platforms.
Layer 5: Application Servers — Node.js for Scalable Real-Time Workloads
iGaming platforms are real-time by nature: live odds, in-play betting, wallet transactions. For the application layer we use Node.js on Ubuntu, taking advantage of its asynchronous, event-driven runtime.
By sharing child processes across server cores (cluster mode), a startup can effectively load-balance the application tier within each machine — extracting maximum performance from every server before scaling out. For a young company, that translates directly into lower infrastructure spend per concurrent player.
Layer 6: Database Layer — MySQL InnoDB Cluster for High Availability
Player balances, bets, and transactions demand a database layer with zero tolerance for data loss. Our reference stack uses MySQL InnoDB Cluster on Ubuntu:
- One R/W (primary) node and two R/O (read-only) replicas, configured via the AdminAPI, with real-time group replication.
- Built-in automatic failover — if the primary fails, the AdminAPI promotes a secondary automatically, keeping the platform transactional with no manual intervention.
This topology gives startups the high availability regulators and payment providers expect, using entirely open-source components.
Layer 7: Game Servers — Apache Tomcat Clusters
For Java-based game engines, we run Apache Tomcat on Ubuntu, with a dedicated Tomcat cluster per game for load balancing and load distribution.
Tomcat’s core components — Catalina (servlet container), Coyote (HTTP connector), and Jasper (JSP engine) — power large-scale, mission-critical Java applications reliably. Clustering per game means one title’s traffic spike never degrades the others: essential when a single popular slot or live event can multiply load in minutes.
Layer 8: Monitoring — Nagios, Hosted Off-Site
No iGaming infrastructure stack is complete without independent monitoring. We deploy Nagios on a dedicated off-site server — because a monitoring system that lives inside the infrastructure it monitors goes blind exactly when you need it most.
Nagios provides real-time network, server, and application monitoring across the stack, allowing the NOC team to detect and act on issues before players notice them. For startups without a 24/7 in-house NOC, this monitoring layer is typically delivered as part of a managed service.
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The full reference stack looks like this:
| Layer | Technology | Role |
|---|---|---|
| Network | Dual ISP feeds, 10G private VLANs | Redundant connectivity |
| Firewall/Routing | pfSense + CARP on bare metal | HA perimeter security |
| Load Balancing | HAProxy | Scaling, SSL offload, DDoS first line |
| Web | Nginx (multi-node) | Request handling, L7 DDoS tuning |
| Application | Node.js on Ubuntu | Real-time, scalable app logic |
| Database | MySQL InnoDB Cluster | HA transactional data |
| Game Servers | Apache Tomcat clusters | Java game engines |
| Monitoring | Nagios (off-site) | 24/7 visibility |
Every component is open source, proven at scale, and free of per-seat or per-core licence fees. What it does require is engineering expertise in high-availability design, security hardening, and iGaming-specific compliance requirements around data location and auditability.
That is the gap HostingB2B fills. As an enterprise hosting provider focused on gaming and betting companies, we deliver this stack as dedicated infrastructure and managed services from licensed-market data centres — so your team can focus on product and players, not firewall failover.
Planning your platform launch? Talk to our engineers about building your iGaming infrastructure stack — from a startup-ready single-rack deployment to a multi-jurisdiction global network.
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