AWS ElastiCache

Managed in-memory caching service delivering microsecond latency to accelerate databases, data lakes, analytics, and application workloads. Supports Valkey-, Memcached-, and Redis-compatible engines in a fully managed form, including a serverless option that eliminates capacity provisioning, maintenance windows, and manual scaling.

AWS ElastiCache removes the operational overhead of hardware provisioning, software patching, and backup management. Integrates with VPC isolation, IAM access controls, and encryption at rest and in transit, with HIPAA, FedRAMP, and PCI DSS compliance. Global Datastore enables cross-region replication for local reads in multi-region setups.

Key features:

• Valkey-, Memcached-, and Redis OSS compatibility with minimal to no application code changes
• Serverless deployment option with automatic scaling and zero capacity planning
• Global Datastore for cross-region replication and local reads
• Encryption at rest and in transit, VPC and IAM integration
• Multi-AZ deployments for higher availability

Common uses include application-layer caching to reduce database load and latency, session stores for web and gaming apps, and real-time features such as leaderboards via sorted sets. For AI workloads, semantic caching supports RAG and agentic AI by reducing latency and reusing frequent queries.