Designing a High-Performance Cache Architecture - Optimizing Large-Scale Gift Event Management with Local Cache and Redis

Oliveyoung's gift events involve tens of thousands or more users simultaneously accessing data and validating conditions, so relying solely on the existing Amazon RDS carries the risk of response delays and failures due to disk-based lookups.

To address this, a global cache using Amazon ElastiCache (Redis) was introduced to quickly serve frequently queried event data from memory. The cached data stores today's ongoing events in a List format to maximize lookup speed.

Furthermore, to improve efficiency in a distributed environment, a local cache using Caffeine Cache is applied. This builds a multi-layer cache strategy that reduces network costs and optimizes overall system response performance.