Technology Stack

Single source of truth for versions — updated in the same PR as any release that changes them.

Component	Role	Supported version(s)	Notes
Apache Kafka	Event backbone	3.x KRaft · greenfield: 4.0+	Kafka 4.0 is KRaft-only; the newer consumer-rebalance protocol materially improves broker-failure recovery
Apache Flink	Stream processing	2.2, RocksDB state	Disaggregated state backend under evaluation
Neo4j Enterprise	Dependency/truth graph	2026.02, Cypher 25
ClickHouse	Incident/event store	25.x	argMax point-in-time replay; CoalescingMergeTree an option
Redis Cluster	Dedup state	7.x	Failover target < 10s — chaos-verified per deployment, never vendor-claimed
PostgreSQL	Suppression rules, config
MinIO	Object storage
Debezium	Change data capture
Schema Registry	Event schemas		Local schema cache serves 30 min during registry outage
Prometheus + Grafana	SLOs + dashboards		Multi-burn-rate windows: 5m / 1h / 6h / 30d
Kubernetes	Orchestration		List supported distros & versions

Vendor performance claims are not accepted as-is. Every failover/recovery figure in this stack is verified against production-sized state in chaos testing before it appears in customer-facing documentation.

Also maintained here: base images, OS versions, TLS libraries — kept in sync with the SBOM shipped per release.

Solution Architecture Data Model & Schemas

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Production Readiness