examples/README.md

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# Apache Flagon Deployment & Analytics Examples

Apache Flagon UserALE.js and Distill support multiple open-standard wire formats (`http-json`, `otlp` / `otlp-json`, and `proto-json`), allowing you to choose the right backend architecture for your workload:

| Example | Stack & License | Best For |
| :--- | :--- | :--- |
| **[OpenTelemetry + Grafana/Loki/Tempo](../products/userale/example/otel-demo/README.md)** | `OtlpJsonExporter` $\rightarrow$ OTel Collector $\rightarrow$ Loki + Tempo + Grafana | **SRE & Observability Teams**: Correlating frontend user interactions, rage-clicks, and errors with distributed backend traces (`traceId` / `spanId`). |
| **[All-Apache Behavioral Lakehouse](./apache-lakehouse/README.md)** | `OtlpJsonExporter` $\rightarrow$ OTel Collector $\rightarrow$ **Apache Kafka** $\rightarrow$ **Apache Iceberg / Parquet** $\rightarrow$ **Apache DataFusion** + **Apache Flagon Distill** (`100% Apache-2.0`) | **Product Analytics & Data Science at Scale**: Columnar storage without inverted-index bloat, fast SQL window functions (`LEAD`/`LAG` funnels), and zero-copy Python analytics with Distill. |
| **[OpenSearch Stack](./opensearch/README.md)** | `OtlpJsonExporter` $\rightarrow$ OTel Collector $\rightarrow$ **OpenSearch** + **OpenSearch Dashboards** (`100% Apache-2.0`) | **Search & Log Indexing**: Drop-in `Apache-2.0` open-source replacement for the legacy ELK stack (Docker Compose + Kubernetes). |
| **[Legacy ELK Stack](./elk/docker/README.md)** | UserALE JSON $\rightarrow$ Logstash $\rightarrow$ Elasticsearch + Kibana | Legacy compatibility for existing Elasticsearch deployments. |