Comcast · Reliability
Fault-tolerant data systems
A high-availability reporting architecture designed to keep critical data workflows dependable through failure and recovery.
High
system availability
Automated
failure recovery
Consistent
disaster recovery controls
01 · Challenge
What had to be solved
Critical reporting workflows needed to remain available when individual services or data nodes failed. Recovery also had to be consistent, repeatable, and supported by controlled delivery practices.
02 · Approach
How the system worked
- 01Distribute requests with load balancing to reduce dependency on a single service instance.
- 02Separate read and write workloads through database replicas.
- 03Use automated failover to restore service without relying on a manual recovery path.
- 04Standardize releases through CI/CD controls to support dependable disaster recovery.
03 · Tools
Technology & controls
High-availability architectureLoad balancingRead/write replicasAutomated failoverCI/CD
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