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Gaming

Built Real-Time Gaming Backend for 500K CCU

8 weeks
4 engineers
Mobile Gaming Studio
AWSEKSRedis ClusterDockerNLBCloudFront
500K
Peak CCU
48ms
P99 Latency
0.01%
Disconnect Rate
12
Regions
Infrastructure Upgrade
Metric
Before
After
Concurrent Users
10K (crash)
500K 50x
P99 Latency
>200 ms
48 ms -76%
Disconnect Rate
15%
0.01% -99.9%
Regions
1
12 Global
Real-Time Gaming Architecture
1
Players
500K CCU
2
NLB + WebSocket
Sticky sessions
3
Redis Cluster
Game state
4
Matchmaker
Skill + geo
Real-time gaming multi-region infrastructureReal-time gaming multi-region infrastructure
Global Gaming Infrastructure — 500K CCU at 48ms Latency

The Challenge

Mobile gaming studio needed real-time multiplayer backend for global launch. Previous infrastructure couldn't handle more than 10K concurrent without mass disconnects.

✗Previous vendor crashed at 10K concurrent connections
✗Game requires <50ms latency for competitive fairness
✗Launch planned in 12 regions simultaneously
✗Matchmaking needed to support skill-based and geographic routing

Our Solution

Custom WebSocket infrastructure on EKS with Redis Cluster for game state pub/sub, NLB for sticky sessions, and a custom matchmaking service with geographic awareness.

Deployed WebSocket pods with horizontal scaling to 200+ replicas
Redis Cluster with 6 shards for game state pub/sub
NLB with target group stickiness for connection persistence
Custom matchmaking service with skill + latency-based routing
CloudFront for static asset delivery in 12 regions
Results & Impact

Game launched successfully in 12 regions. 500K CCU on launch day with zero infrastructure incidents.

Project Timeline

Week 1-2
Architecture design, EKS cluster setup, Redis Cluster
Week 3-4
WebSocket server development, connection management
Week 5-6
Matchmaking service, geographic routing
Week 7
Load testing — validated 600K CCU capacity
Week 8
Multi-region deployment, launch day support
LE

"500K concurrent players, 48ms latency. CloudLink built our multiplayer backend from scratch."

Lead Engineer
Mobile Gaming Studio

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