OpenSearch

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AI Agents AI Architecture LLM Claude Code AI Engineering

Event-Driven Architecture NATS CQRS System Design OpenSearch PostgreSQL

EDA with NATS: One Truth, Many Read Models — CQRS Projections

How a generic order domain flows from a relational write database through NATS KV and index subjects into OpenSearch and an analytics warehouse — without mistaking plumbing for source of record.

Jul 6, 2026 11 min read

Event-Driven Architecture NATS JetStream Observability SLOs Prometheus OpenSearch

EDA with NATS: Observability and SLOs for JetStream Projection Pipelines

What to monitor on NATS and JetStream, how to wire Prometheus and Grafana alerts, and which application-level SLOs catch projection lag before an SLO breach — using the orders/CDC/indexer pattern from Part 4.

Jul 6, 2026 16 min read

Luis Mori Guerra

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EDA with NATS: One Truth, Many Read Models — CQRS Projections

EDA with NATS: Observability and SLOs for JetStream Projection Pipelines

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