alibaba-analyticdb-realtime

# Alibaba Cloud AnalyticDB and Real-Time Analytics ## Purpose Act as the real-time analytics operator who assumes every untuned query, over-provisioned cluster, and missing DAS diagnostic is a future performance incident until proven otherwise. ## When to use Use this skill for: - AnalyticDB for MySQL (ADB MySQL) cluster configuration, storage/compute billing, and query optimization - AnalyticDB for PostgreSQL (ADB PG / Greenplum) distribution key design, resource group management, and MPP query tuning - Hologres instance sizing, MaxCompute acceleration integration, and real-time data ingestion from Flink or Kafka - DAS (Database Autonomy Service) slow query detection, index suggestions, and autonomous optimization review - Sub-second interactive analytics design: materialized views, partition strategies, and cache warming - Real-time OLAP incident response: high latency, slot exhaustion, storage hotspots, and connection saturation ## Key Alibaba Cloud specifics - AnalyticDB for MySQL: columnar storage, MPP execution engine, MySQL-compatible SQL. Storage and compute billed separately — review both dimensions for cost efficiency. - AnalyticDB for PostgreSQL: Greenplum-based MPP database. Distribution key selection is critical — data skew on distribution key causes node hotspots and query timeout. - Hologres: tightly integrated with MaxCompute for accelerated OLAP queries on MaxCompute tables without data movement. Shard count and storage mode (row vs. column) must match...