Amazon Neptune

Amazon Neptune

Amazon Neptune is a fast, reliable, fully managed graph database service that makes it easy to build and run applications that work with highly connected datasets. It is optimized for storing billions of relationships and querying the graph with milliseconds latency.

Key Features

• Multi-Model: Supports Property Graph (Gremlin, openCypher) and RDF (SPARQL).
• High Availability: Replicates data across 3 Availability Zones (like Aurora). Storage is self-healing.
• Read Replicas: Up to 15 read replicas for high read throughput.
• Neptune Analytics: Analyze large graphs in memory for faster insights.
• Serverless: Automatically scales based on workload.

Exam Tips

• "Graph Database": The answer is Neptune.
• "Highly connected data" / "Relationships": Think Social Networks, Recommendation Engines, Fraud Detection.
• Query Languages: Mentions of Gremlin, SPARQL, or openCypher.
• "Billions of relationships": Neptune scale.

Common Use Cases

• Social Networking: Storing user connections, posts, likes.
• Recommendation Engines: "Users who bought X also bought Y".
• Fraud Detection: Detecting patterns in financial transactions.
• Knowledge Graphs: Linking information assets (Wiki-style data).