Read-Heavy SaaS API
Read-Heavy Applicationmoderate complexity
Deterministic topology derived from YAML knowledge entities. Nodes represent workloads, datastores, patterns, and risk components. Edges show typed relationships with propagation direction.
7
Components
6
Connections
2
Failure Modes
2
Propagation Paths
Max exposure: high· 1 high-risk node in this topology
Topology Graph7 nodes · 6 edges
1 high-risk nodeClick a failure mode below to trace propagation
Workload
Datastore
Cache
Event stream
Pattern
Risk node
Risk path
Failure Propagation Trace
Topology Notes
- ·Redis sits between the application and PostgreSQL on the read path. All cacheable GET responses pass through Redis first.
- ·PgBouncer sits between the application and PostgreSQL on all paths. Application connects to PgBouncer, never directly to PostgreSQL.
- ·Read replicas receive streaming WAL from the primary. Application routes read-only queries to replicas, write queries to primary.
- ·Redis and PgBouncer are shared infrastructure across all application replicas. They must be sized for the aggregate connection and request load, not per-instance load.