Self-Hosted Flagsmith Platform
Architected and deployed a highly secure, self-hosted Flagsmith feature-flagging platform on AWS ECS Fargate, providing 100% data sovereignty and massive cost savings compared to SaaS.
The Problem
Strict data sovereignty policies preventing the use of external SaaS providers for feature flags, coupled with high scaling subscription fees for high-traffic microservices.
The Challenge
- Replicating enterprise feature flagging capabilities within a private VPC network structure.
- Ensuring sub-20ms evaluation latency under heavy API request volume.
Our Solution
- Deployed ECS Fargate nodes in private subnets utilizing secure internal load balancers.
- Engineered robust deployment pipelines using Terraform and Terragrunt.
- Built real-time CloudWatch dashboards and integrated automated PagerDuty alerting.
- Executed comprehensive load profiles using K6 to verify reliability under spikes.
Key Results
100% Data Sovereignty
Satisfied federal requirements by retaining 100% of data internally.
Zero SaaS Fees
Pruned third-party SaaS subscription costs entirely for massive long-term relief.
Ultra-Low Latency
Verified sub-20ms SDK flag evaluations under high concurrency.
Real-Time Alerting
Integrated PagerDuty connected via automated CloudWatch alarms, ensuring a <5 minute incident response SLA.
Outcome
Achieved 100% data sovereignty by keeping all transactions inside the secure VPC, eliminated monthly SaaS fees completely, and load-tested to sub-20ms latency.
Tech Stack
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