backend redesign

flink/config.example.yaml

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+# Example configuration file
+# This should be mounted at /etc/config/config.yaml in the Flink container
+
+# ZeroMQ bind address and ports
+zmq_bind_address: "tcp://*"
+zmq_ingestor_work_queue_port: 5555
+zmq_ingestor_response_port: 5556
+zmq_ingestor_control_port: 5557
+zmq_market_data_pub_port: 5558
+zmq_client_request_port: 5559
+zmq_cep_webhook_port: 5560
+
+# Notification publisher endpoint (Flink → Relay)
+# Relay connects XSUB to this endpoint and proxies to clients
+notification_publish_endpoint: "tcp://*:5557"
+
+# Kafka configuration
+kafka_bootstrap_servers: "kafka:9092"
+kafka_tick_topic: "market-tick"
+kafka_ohlc_topic: "market-ohlc"
+kafka_topics_file: "/topics-dev.yaml"  # Use topics-dev.yaml for single broker dev environment
+
+# Iceberg catalog
+iceberg_catalog_uri: "http://iceberg-catalog:8181"
+iceberg_warehouse: "s3://trading-warehouse/"
+iceberg_namespace: "trading"
+iceberg_table_prefix: "market"
+
+# Flink configuration
+flink_parallelism: 4
+flink_checkpoint_interval_ms: 60000